21st Birthday Messages: Sayings, Quotes, and Wishes

Are you wondering what to write in a 21st birthday card? These messages can be used for a variety of ways to wish someone a happy 21st birthday including in a card on Facebook, or in an sms text message.  Use the following as your risk for your own personal 21st birthday wishes, messages, and sayings. 

Keep in mind that some things become legal at age 21, such as being old enough to drink.  Most people will opt for a joke about becoming legal drinking age, but you don't have to be predictable with your message.

Examples of What to Write in a 21st Birthday Card

Here are some examples of 21st birthday card messages to get you going on ideas for your card message.  Edit these to be even more funny or make them fit the person you are writing to.
  1. Twenty one is the magical age when responsibility starts to taste better than alcohol.  Enjoy your new taste for responsibility.
  2. Your fake I.D. has expired! You’re 21!  Happy Birthday!
  3. I know you are excited about finally being able to buy a hand gun, but did you know that you can also legally buy alcoholic beverages at age 21?  Most people are only know about the hand gun thing.
  4. The law seems to encourage you to do two dangerous things on your 21st birthday: buy alcohol and buy a hand gun.  Doesn’t seem smart to me, but hey, it’s America!
  5. Remember, if you can’t count backwards from 21 by sevens, you are probably having too good of a time at your 21st birthday party.  Happy 21st birthday!
  6. There’s a reason that no one can become a U.S. president until the age of 35.  It’s because of the years 21-34.  I guess you have 14 years to sober up and become President.
  7. The reason they let you start drinking when you turn 21 is because it is the first birthday in your twenties when you realize you are getting closer to 30, and that’s not as fun as turning 20.  So, here’s to depressing twenty one.
  8. It’s barrels of fun to turn twenty one.
  9. I can’t think of a single reason someone would be excited to turn 21.  Can you?  Try to have a happy birthday anyway.
  10. Everyone focuses on telling you to drink responsibly when you turn 21, but I want to warn you of another danger.  Eat responsibly, because your metabolism will be slowing down as you get older.
  11. If you ask Nigel Tufnel of Spinal Tap why 21 is so much better than 20,  he would simply explain, “It’s one older… isn’t it?”
  12. As a twenty one year old, you should know whether 21 is a prime number or not.  If you don’t know, you might have to ask someone younger, because the rest of the adults can’t remember.
  13. For some reason twenty one year olds are not able to blow out their candles as well as twenty year olds.  No one knows why this is true, but anyone who has observed it will tell you that the twenty year olds are better with their aim for some reason.
  14. Now that you’re twenty-one you are probably too mature to do foolish and ridiculous things that you’ll regret all on your own.  That’s why the government decided to allow a substance to induce 12-15 year old behaviors.  This way the general population will be able to stay immature.
  15. Congratulations!  It’s now legal for you to vote, die in war, and be drunk all at the same time.  That’s what I call responsibility.
  16. When you turn 21, keep in mind that alcohol consumption is the leading cause of public humiliation and embarrassment in across the globe.  Remember that not all things that are legal are wise.
  17. Congratulations! Now that you are twenty one it is now legal to kill yourself via brain and liver poisoning.  At the same time you can spend money you shouldn’t, do risky things, and maybe do some things that aren’t legal that you would normally never do.
  18. For every person wishing they were 21 or older, there are at least 5 people wishing they were younger.  Congratulations on getting older.
  19. Congratulations, it just became lawful for you to do the same stupid things you did when you were a teenager.  It’s just that now you can have some help from a poisonous substance.
  20. Statistics show that those who do not start drinking before they are 21 remain mostly non drinkers; while those who are heavy drinkers before age 21 usually remain heavy drinkers. Congratulations on your likely future of more of the same.  Happy 21st birthday!
A card with this image on the outside might be appropriate if you know the newly 21-year-old has plans to practice his newly legal extra curricular activites.