ICYMI, Twitter turned 10 yesterday. Yup, the social media site has officially been around for a decade, and a whole load of celebs celebrated the big one oh by - wait for it - sending tweets.
King of Twitter Justin Bieber, however, decided to take things one step further - posting a vid of himself singing Happy Birthday in a voice we're not sure we've ever heard before.
A fitting way for the second most followed person to mark the occasion, no? (For all those wondering, Katy Perry is No.1).
Totally playing it at our own bday parties from now on forever and ever amen.
Here's some other celebs' HBD messages:
HAPPY BIRTHDAY TWITTER.