5 Seconds of Summer? More like More Than 5 Seconds of Luke Hemmings' Naked Butt Thanks to Michael Clifford. (Um, clearly we need to be in charge of naming ALL the bands.)

Michael immediately sent the 5SOS Fam into a fangirl frenzy last night (Dec. 15), tweeting a NSFW FaceTime screen shot of Luke mooning him.

"I still can't get girls I went to high school with to talk to me... so here's luke's butt," Michael captioned the jaw-dropping pic in what is probably the most random non-sequtir we've ever heard.

While Luke took the selfie at kind of an odd angle, the whole world now knows -- in intricate detail -- what his naked back and bare butt look like. Of course, we also know what Mikey's automatic reaction to Luke's, uh, full moon is, and that is perfectly pursed duck lips and an inexplicable need to tweet out the screen cap to the entire fandom. Not that we're complaining, of course. You can't really go wrong with partially naked Luke.

Peep the censored version of the pic above, and head over to Michael's Twitter to see the photo in all of its NSFW glory.

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