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Birthday wording

What to write in your son’s birthday card

Tell your son you love him, name something specific you’re proud of from this past year, and wish him well for the one ahead. For a young child, keep it short and playful and mention what he loves right now. For an adult son, recognize the man he’s become and how much you enjoy him, not just how much he’s grown.

21 examples below: Short and simple · Heartfelt · Funny · Formal

Short and simple

Quick wishes for kids and grown sons alike.

“Happy 7th birthday, buddy! We love you to the moon and back.”
“Happy birthday to our favorite dinosaur expert.”
“Happy birthday, son. Proud of you every single day.”
“Ten years of you is the best thing that ever happened to us.”
“Happy birthday, Jake. Come home soon, the dog misses you. So do we.”
“Happy 30th, kiddo. You’ll always be my boy.”
A sample birthday card front: a hand-drawn burst of lines on blush paper
A sample card front in our hand-drawn style. The message is written inside with a real pen.

Heartfelt

For the card he might keep in a drawer for years.

“Happy birthday, Owen. This year you learned to swim, read your first chapter book and stood up for a friend at recess. That last one made me proudest of all.”
“When you were five, you wanted to be a garbage truck driver so you could ride on the back. Now you’re heading off to college, and I’m just as excited for you. Happy 18th.”
“Watching you become a father has shown me the best of who you are. You’re patient, funny and kind, and Maya is so lucky. Happy birthday, son.”
“You’re the person I’d choose to have dinner with even if you weren’t my son. Happy birthday. I hope this year gives you everything you’ve worked for.”
“Being a teenager isn’t easy, and you’re handling it with more grace than I did. I love you, I’m proud of you, and I’m always on your side.”
“Your dad and I talk about you all the time, usually starting with “Remember when he…” and ending in laughter. Happy birthday, sweetheart.”
“However old you get, I still remember the weight of you asleep on my shoulder. Happy birthday to my grown-up boy.”

Funny

Playful lines for kids, teens and sons who like a laugh.

“Happy birthday! You can have cake for breakfast. Just this once. Okay, and maybe tomorrow.”
“Happy 16th! I’ve started praying for every other driver on the road.”
“Happy birthday to the son who still calls me when he can’t figure out the washing machine.”
“You get your good looks from me. The rest you can blame on your mother. Happy birthday!”
“Happy birthday! Your room is still exactly how you left it, because nobody dares go in.”

Formal

Traditional wording, also good from grandparents or the whole family.

“Wishing our dear son a very happy birthday and a year full of joy.”
“With all our love on your birthday and every day, Mom and Dad.”
“Happy birthday, son. May this year bring you health, happiness and every success.”

Do

  • Name something specific he did this year, big or small.
  • For little kids, mention their current obsession: trucks, soccer, a favorite book.
  • For adult sons, talk about the person he is, not just childhood memories.
  • Say “I love you” and “I’m proud of you” in plain words.

Don’t

  • Don’t use the card for advice or nudges about grades, jobs or settling down.
  • Don’t compare him with siblings or cousins.
  • Don’t embarrass a teenager with baby nicknames if he’ll hate it.
  • Don’t keep it so short that it reads like a signature.

How to write it

Start with the wish and his age if it’s a milestone. Then add a proud moment from the past year, such as a new skill, a kind thing he did, or how he handled something hard.

For a young child, keep sentences short enough to read aloud and end with a big “we love you.” For a grown son, add a line about who he is now and what you enjoy about him, then close with a wish for the year ahead.

Writing it every year? Mention this year’s details. Over time the cards become a record of who he was at each age.

Questions

Tell him what you admire about the man he is, mention something from his life now, like his work, partner or kids, and say you’re proud of him. Keep advice out of it.

Short and joyful: his name, his new age, something he loves, and “we love you.” Kids enjoy hearing their card read aloud, so write it to be heard.

Keep it warm and free of guilt: say you’re thinking of him, share a memory, and tell him you’d love to see him. Avoid mentioning how rarely you talk.

For milestones like 13, 18 or 21, many parents write a longer letter he can keep. A card is perfect for other years.

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