A dad wrote this birthday message to his daughter on her 21st. He's now our hero.

You’ve got to love a dad joke.

Anyone who’s ever had a dad, been a dad or walked past a dad in the street, knows being a dad requires a certain sense of humour – you’ve got to crack bad jokes and you’ve got to crack them as often as possible.

That’s why every single person in the world can relate to this dad’s Facebook post for his daughter’s birthday.

When Raylin Pellatt recently turned 21 her dad, Joe, posted a photo of her – with a seal – on Facebook.

He captioned it: “Happy 21st Birthday to my beautiful daughter (left) Raylin”.

Thanks for the clarification, Dad. pic.twitter.com/Y2ulMh7sJV

— Ray (@rayy_baybay) July 21, 2017

Yep, classic dad joke.

Raylin then tweeted a screenshot of the status, writing: “Thanks for the clarification, Dad”.

Of course, the internet immediately fell in love with Joe and his daggy dad sense of humour.

Tell your dad I love him… this is hilarious pic.twitter.com/smCLObqw2o

— D o m o ???????? (@brwnskiinvix) July 22, 2017

pic.twitter.com/vzonVquYAo

— Fanti Prince (@abbanofficial) July 22, 2017

Classic dad joke. 10/10

— Aspen (@aheilman6) July 23, 2017

Your dad is now my favorite person

— kels (@kber1013) July 21, 2017

We talk to the dad of the two-year-old reptile wrangler. Post continues…

And when Joe found out his hilarious joke was going viral, he absolutely loved it.

he texted me and told me how funny he thought he was.

— Ray (@rayy_baybay) July 21, 2017

My dad keeps texting me asking for updates on how this tweet is doing

— Ray (@rayy_baybay) July 22, 2017

My dad is proud of himself

— Ray (@rayy_baybay) July 22, 2017

Good one, Joe.

Does your dad crack dad jokes? Tell us about them in the comments below.