Post Malone and Justin Bieber have been on the road together now for about a month, with Posty opening up for the Biebs on the North American leg of his Purpose tour.


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But Justin knows Post Malone’s real “purpose”—to be his personal ashtray.

Post was performing “White Iverson” at a club in Houston, accompanied by a dancing, smoking Bieber to his left, when the literal burn went down.

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In the middle of his performance, a beanie-sporting Bieber decided he really needed an ashtray, and found one in his buddy, gently pressing his burning cig/joint/some smoking object into Post’s unsuspecting bare arm.

Post handled it like a champ, though, without missing a beat. Justin was probably just making sure he’s prepared to handle the unexpected. Those Beliebers can get pretty wild sometimes.