Justin Bieber may be fairly new to the Vine game, but all of his short video clips are comedic gold, leaving us cracking up and watching them on an endless loop. (Seriously, the sounds of maniacal laughter may or may not have been heard from the PopCrush office.) For your viewing pleasure, we've rounded up some of the Biebs' best Vine work -- whether it's his own clips or Vines he has re-posted -- so get ready to lose it laughing, Beliebers. Check out Justin Bieber's best Vines below! (Some are slightly NSFW.)

Despite some pretty sexy distractions, the Biebs stays focused.

Yee-haw! You nail that country falsetto, JB.

We can't get over his laugh mid-Lonestar jam.

What's a "Get Psyched" playlist without some Alanis Morrisette?

Justin understands the struggle of the subway.

The paparazzi struggle is real.

The Biebs brings it back to the '50s with his piano rendition of Jerry Lee Lewis' 'Whole Lotta Shakin' Goin' On.'

It might not always be a good thing to dream about Justin Bieber...

Because of course Justin Bieber would have his own song as a ringtone on his phone.

Justin understands the importance of perfect posture.

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