Buzz·Posted on 1 Mar 201521 Reasons Justin Bieber Is The Sexiest Man On This Goddamn PlanetHAPPY 21st BIRTHDAY, YOU SEXY THANG.by Jemima SkelleyBuzzFeed Staff, AustraliaLinkFacebookPinterestTwitterMail 1. When he looked hella fine in a suit even though he was wearing the douchiest earrings of all time. View this photo on Instagram 2. When he stripped on live TV and this girl's Vine summed up exactly how you were feeling. View this vine on Vine vine.co 3. When he wore a weird ass hat but still looked so damn attractive. View this photo on Instagram 4. That time he looked like THIS. Tap to play GIF Tap to play GIF 5. And his arms looked like they were sent down from the heavens just to make your knees weak. Tap to play GIF Tap to play GIF 6. Remember when he peed in a mop bucket and you were worried for your boo but at the same time still loved him so much. Tap to play GIF Tap to play GIF Tap to play GIF Tap to play GIF 7. Ditto that time he sprayed cleaning fluid on a picture of Bill Clinton. Tap to play GIF Tap to play GIF Tap to play GIF Tap to play GIF 8. When he stared thoughtfully out of a window and made you think "HOW CAN SOMEONE BE THAT DAMN PHOTOGENIC?". View this photo on Instagram 9. This time when he pioneered new dance moves for "Baby". View this vine on Vine vine.co 10. When he wore A FUCKING BUCKET HAT and you still wanted to bang him. 11. When he had the actual sexiest mug shot ever. 12. When he CASUALLY HUNG OUT WITH JAY Z AND KEVIN HART like he does it all the time (which he probably does because he's fucking flawless). View this photo on Instagram 13. When he wore a fucking headband and rapped and made you want to jump his bones. View this photo on Instagram 14. When he called the shit out of Hayley for saying he's white trash. View this photo on Instagram 15. When he was tired from a long day of being swaggy and got carried up the Great Wall of China like a GOD. 16. When he said "Fuck the police", and you said "No, Justin, fuck ME". View this photo on Instagram 17. When he wore these amazing pants and he looked like he pooped himself but still was so hot. 18. When he smoked a disgusting cigar but you still wanted to put your tongue inside his mouth. View this photo on Instagram 19. When he proved the theory that a guy gets ten million times hotter when he holds a baby animal, even though you never knew he could actually get hotter than he already is. View this photo on Instagram 20. OMG AND THEN HE GOT A MONKEY AND EVEN THOUGH HE ABANDONED IT, HE'S STILL SO FUCKING HOT. View this photo on Instagram 21. When he was just so damn human and he embraced his flaws and you just wanted to give him a cuddle. Tap to play GIF Tap to play GIF HAPPY BIRTHDAY BB. XOXO. ENJOY YOUR FIRST SIP OF ALCOHOL IN THE U.S. Tap to play GIF Tap to play GIF