NSFW! Justin Bieber bares his butt on Instagram -- and Twitter is quick to start the #bumoff

Meredith B. Kile
Updated


Justin Bieber is having a great time on vacation, if the pictures on his Instagram are any indication.

The singer stripped down to show off his, um, assets on a boat Monday, captioning the pic with a simple "Look."

And "look," the Beliebers did, liking the photo more than 600,000 times and posting nearly 200,000 comments in less than an hour.

SEE ALSO: The evolution of Justin Bieber:

"OMG can I like this 1,000 times?" wrote one fan, while others just went with a string of emphatic emoji. "OMG😍😍😱😱💕😱💕😱💕😱😍💕😍💕😱💕😱💕😱💕😱💕"

SEE ALSO: More Bieber:



Keep doing you, Biebs.

Of course, this isn't this first time the Biebs stripped down -- thought previously, he stopped at 'his Calvins.' Remember this?

Justin Bieber Strips Down to His Calvins: Check Out Bieber's Bulge!
Justin Bieber Strips Down to His Calvins: Check Out Bieber's Bulge!

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