If you haven't yet wished Chris Hemsworth a happy birthday, then I guess it's better late than never so go ahead.
A lot of not-at-all famous pals of Chris wished him a happy birthday, which was pretty nice.
Now one name you just saw in that screenshot was The Rock aka Dwayne Johnson. Not content with simply commenting, Dwayne actually did his own Instagram video dedicated to Chris. And yep, as you can imagine it was pretty hilarious.
Pausing his workout to do so, Dwayne celebrated Chris' special day by singing "Happy Birthday"... except he'd modified the lyrics just a little bit.
Instead of the regular words to the song, Dwayne sang: "Happy birthday to Thor, you Australian man-whore. You're the greatest Chris, and that's a fact...After Evans, Pine, and Pratt."
He then signed the video off by calling Chris a "handsome son of a bitch" and reminding him that's he's number four, presumably talking about the famous Chris list. Charming!
But panic not, Chris saw the funny side. Reposting the video to his own Instagram, Chris thanked Dwayne for breaking the news to him and on making him look cool to his kids.