Funny 18th Birthday Quotes – Turning 18 is an overwhelming milestone for every teenager as he/she is in between leaving the teenager and turning into a full adult so it is necessary to make this 18th birthday a fun-filled one with lots of lovely memories. One way to do that is by writing them funny 18th birthday quotes and messages to light up their day.
Writing a birthday wish for an eighteen-year-old can be brainstorming especially when trying to make it a remarkable one, but that should not be a problem cause I’ve got you covered with this compilation of the funniest 18th birthday wishes, quotes, and messages for both friends, siblings, and spouse below.

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Funny 18th Birthday Quotes
Congratulations…wait…not for your birthday…but for becoming legally able to buy a bottle of wine. Happy birthday, dear!
Now you are 18 years old so think of buying your meal yourself. A tip, wake up late so you can skip your breakfast and save some money for the rest 2 meals, ha-ha. Happy birthday, dear!
Happy 18th Birthday to our favorite Lil turtle-dove.
Happy 18th birthday my dear! May God bless you today and every day in your life!
Congratulations on turning 18! May your future be as bright as your smiles today. Happy birthday!
Enjoy this special moment of your life to the fullest. I wish you a happy future ahead. Happy 18th birthday!
Happy birthday here’s to all of the many opportunities that await you in this life! You’ve got this!
Now you are 18 years and you are mature enough to live your life according to your philosophy. Spread your wings, our angel. Happy Birthday!
Happy 18th birthday! Don’t worry about acting like an adult just yet. Today, we party like rock stars. Tomorrow, like mature adults, we pretend it never happened!
You are my best birthday gift. I congratulate you with 18th birthday. Enjoy your day, sweetheart!
Funny 18th Birthday Wishes
Turning 18th years old is just the beginning of adult life. Taste it and live as you like, without copying anyone else. Happy 18th birthday, my angel.
There are no limits on where you go after today, find happiness in all you do. Happy Birthday enjoy your journey.
I have a feeling that you were born just yesterday and already today we celebrate your 18th. You are a beautiful woman now with a pure heart. Happy Birthday, dearest.
I hope you’re not looking for a job on your birthday. Have a blast while you’re still not paying taxes.
With great power comes great responsibility, but not necessarily the other way round. Enjoy your special day!
Happy Birthday! Now you are finally perfectly legal to continue doing everything you’ve been doing for the past five years!
I know you are now someone who no longer needs to be told what to do but make sure you have an amazing birthday today!
You can now get a job, start paying your car insurance, and vote! Lucky you! Have a great and responsible birthday!
Parents always feel bittersweet when their children turn into adults. I am so proud of you. Happy Birthday!
Welcome to the world of adulthood! Enjoy your special day and the great years ahead. Happy eighteenth birthday!
Funny 18th Birthday Quotes For Brother
As you turn 18 and become an adult, I wish you a lot of happiness and healthy life. Happy 18th birthday my little bro.
With every year that you spend with me, it becomes more phenomenal. Have a brilliant 18th celebration brother.
Happy birthday, bro! May your day be more beautiful than a unicorn farting rainbows!
Happy birthday, brother! They say that the older you get, the smarter you become. But as we keep on doing the same stupid things we did as kids, I guess we are the exception to that rule.
Happy birthday to a brother who is smart, funny, witty, charming… and reminds me a lot of myself!
I’m so glad I have a brother like you and on this special occasion, I’m wishing a very happy birthday to you today, bro!
I’ve spent so many years laughing at you and I’m sure that I’ll spend many more laughing with you! I’m so lucky to have a funny younger brother like you!
You’re finally 18! Now you can legally do all those things that you’ve been doing since you were 14! Happy birthday!
No matter how serious life gets, you’ve got to have that one person you can be completely stupid with. So glad I’ve got you, bro! Have a brilliant birthday!
Funny 18th Birthday Wishes For Girl
You’re old enough to know better. You’re young enough not to!! Have your best year yet, happy birthday.
Today, with no regrets, I must say that I’m proud of you and all that you do. Happy birthday lovely girl.
May today be wonderful in every way? Wishing you an amazing birthday, my beautiful girl!
Now that you’re 18, I hope you don’t start worrying about acting like a grownup. You’re amazing just the way you are.
Even though you’re officially a grownup, I hope you never lose that childlike sense of wonder, joy, and mischief.
A charming 18th birthday for the darling young lady. May your day be filled with laughter and joy.
May this special day bring lots of happiness and joy to your life. May everything you desire come true. Happy 18th birthday!
May your inner beauty boost your confidence and make this year one of your best years ever. Happy 18th birthday!
Happy 18th Birthday to my favorite. You’re graduating high school and graduating college all at the same time.
You are changing every day in some way or another, for the better. May this year be one of your best years ever! Happy 18th birthday to this awesome girl.
Funny 18th Birthday Quotes For Son
Happy birthday, son! I wish you grow smarter, kinder, and handsome with every passing year. Celebrate with your whole heart.
An 18th birthday is one of the many milestones in life son, and I hope you have the best birthday and a great life ahead!
Happy 18th birthday to my fine young man. We are so proud of what you have achieved over the years and look forward to many more of your adventures. We are always supporting you!
To a special son. Reach for the stars. Don’t settle for less because you deserve true happiness. You were born to be special, one of a kind. With a beautiful soul, you make your way with your ideas. You’re kind, loving, and funny. Which is why, son, there’s nobody quite like you. Happy 18th birthday!
Now that you are officially an adult, you have to mine your intellectual and smart abilities to grow into the gentleman you want. Happy birthday my son!
Happy 18th birthday man. You’ve already started on a wonderful journey and I’m wishing you the brightest future possible as you continue on your adventure, my dear boy.
You are the smartest and the best son of your mom. Today, I’m the happiest mom in the world for watching you turn 18 years.
I’m the proudest mom in the world right now. I’m sending all the blessings and love to my smart boy as he turns 18 years.
My son, I am amazed by everything you do. You make me so proud every day. You’ll change the world someday by just being you. Happy birthday!
Happy happy birthday sonny boy. You’re destined for such great things. We love you more than you know!
Funny 18th Birthday Quotes For Daughter
My, princess, your 18th birthday has arrived! I’m so happy for you dear. This is a new phase of your life. Dream more to get more. Have a wonderful journey in life. Happy birthday!
Here you are, 18 years, the legal age of maturity. I pray this next stage of life will bring beautiful memories, happiness, and achievements. Happy birthday, daughter!
Happy 18th birthday, my child! You’re now independent and have the right to take all your decisions by yourself. I know that your every decision will be the best and we’re with you to support you. May you become a very successful person in life!
Now you’re 18 years, finally, you can be responsible for your actions. I wish you success and a happy 18th birthday.
It’s time to carry some accountabilities on your shoulder to prove you’re now an adult. I pray and wish you a bright future ahead. Enjoy this 18th birthday to the fullest.
May this year bring you plenty of reasons to smile, and endless opportunities to make you happier! My girl, you were born to be a star! Happy Birthday!
My beloved daughter, today you’ve turned 18. Congratulations Princess! May God always keep you safe from all the evil and make you realize the difference between right and wrong! Love you.
This life is like a journey on a boat; you are now in full control with an oar to start the journey. I hope you have the courage and strength to move it. Happy 18th birthday!
Finally, the long-awaited day has come. It’s your 18th birthday dear. May God always keep you happy and healthy and fulfill all your dreams! Enjoy the day with your loved one and make a lot of good memories. Wish you a very happy birthday!
My sister, happy 18th birthday! I’m so happy about entrance into the new stage of life. You know that how much I love and admire you. Keep smiling sis and have a wonderful and adventurous life.
18th Birthday Wishes For Boyfriend Funny
Happy 18th birthday my boyfriend. I wish you grow better and also become more responsible in all that you do.
You have always told me that you love me. I wish that love will not fade away from your heart. Happy 18th birthday my darling boyfriend.
Congrats on becoming another year old but not wiser. It’s a good thing you have good looks. Happy Birthday.
Happy Birthday to the best boyfriend in the world. I wanted to plan you a surprise birthday party but we all know that I can’t keep a secret.
Happy birthday, honey. I’ll stick around forever…or at least until you stop looking younger than your true age. Stay sexy!
I wish that you will stop hating yourself when you are wrong but always accept that there’s no crime in being wrong. Happy 18th birthday to you.
100. To my 18-year-old boyfriend celebrating his birthday today, I wish you success beyond the kind of success you wish for yourself. Happy birthday, love!
I’m just a girl who loves a boy. Today is your birthday and celebrate what we’ll do. Life is an adventure and I’m so glad we’re sailing these uncharted seas together. Together makes it so much brighter and better. I love you to the Milky Way and back.
Remember, it’s not that you’re older than me, you’re just a little more experienced. Happy birthday to your girlfriend!
You always tell me to spend less money. Well, I’ve decided to take your advice. It is reflected in the birthday gift I bought you.
18th Birthday Wishes For Girlfriend Funny
I searched online and went to all the shops, old and new. But I could not find anything that was as pretty as you. Happy birthday, girl!
Happy birthday my love. Those are not gray hairs you see they are strands of birthday glitter growing out of your head.
Happy birthday, dear! It’s your birthday! So, make sure you are going to properly utilize the day with a lot of monkey business! Let’s have a crazy party. Happy birthday to you my Princess!
Your birthday is pretty much the only one that I can actually remember by heart, mainly because I know my life wouldn’t be worth living if I were to ever forget it! Happy Birthday, Love.
I don’t believe in birthdays because I know you came straight from heaven to make my life happier & beautiful. All the good wishes for my angel!
Yay! You are technically a full-blown adult now, so let’s celebrate this day to the max and proceed to do what adults do at night if you know what I mean. Happy 18th, my love.
This is the age that comes with numerous benefits such as the opportunity to create PayPal and YouTube accounts! May you enjoy every second that comes with this remarkable age. Happy 18th!
Sweetheart, you have reached the age where in addition to enjoying a host of freedoms, you can also legally get the death penalty. I would be careful if I were you. Happy 18th birthday!
Happy 18th birthday, sweetheart! As a present on your Big Day, I will serve my body to you on a platter. Ain’t I the most wonderful boyfriend in the world?! You’re welcome.
My love, I think I should change your name to “Asthma” because you are great at constantly taking my breath away! I hope you enjoy every moment of your 18th year of life while it lasts. Happy 18th, my love and “asthma”!
18th Birthday Quotes For Sister Funny
Hello sister, I hope you are not looking for a job on this special day. Have a blast as you start paying taxes. Happy 18th birthday!
Happy Birthday to not only the sassiest but the coolest, and craziest most adorable little sister in the world!
Even though you will always be a little monkey to me, you have grown up, happy birthday Lil sister.
Many times in my life, I’ve found myself wishing you are not my sister. But today, you are an all-grown sister, so no more fights. Happy birthday!
Happy Birthday to the most competitive person I came across in my life. I don’t know though, why could you never accept my win against you…..
The best thing about having a little sister is being able to annoy someone that can do nothing about it. Happy birthday my little sis.
You know you get the most attention, right? So what exactly is the point of a whole day dedicated to you? Anyways, happy Birthday!
Happy birthday to you! You look like a Chimpanzee, and you belong in a zoo! There you go, little sister. I hope your birthday is absolutely bananas!
On your special day, I want to confess that I could never find a better crime partner than you. All of my cray ideas are implemented successfully just because of you. I’m so lucky to have a cute baby sister
Many times in my life, I’ve found myself wishing you are not my sister. But today, you are an all-grown sister, so no more fights. Happy birthday!
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18th Birthday Funny Quotes For Friends
When you turn 18, everyone remembers your age by how many months you’ve been alive. For example, I’ve been alive eight months? Okay… Bye?
There’s a lot of pressure on 18 year-olds. Parents want to know if you plan to go to college or not, and your teachers want to know what you’re going to do with the rest of your life.
Congratulations! Finally, you have grown from a small guy in a diaper to a diaper-free guy. Happy birthday!
Hurry up! Find yourself another place to live. Congratulations on entering into adulthood life.
Congratulations on becoming an adult. It’s time to take up some responsibilities on your shoulder to prove to us all that you’re the man. Happy 18th birthday!
Age is just a number. Real maturity comes from experience. Congratulations on becoming 18! I wish you a bright future!
Life is like a journey by boat and from today, you’re ready to take charge of your boat. I wish you all the very best for the future. Happy birthday!
Happy 18th birthday! It may seem sweet for the first couple of days. But after that, you’ll really heating adulthood. Best of luck!
My, princess, your 18th birthday has arrived! I’m so happy for you dear. This is a new phase of your life. Have a wonderful journey in life. Happy birthday!
It’s your birthday! Have fun, make mistakes, definitely stay out too late, go too far, laugh until your face hurts, cry even harder when you see your mistakes. Fail at something, start over, fail again.