"We were working on 'Stoney,' and then we had a tattoo artist come through, and I was like, 'You know what? Justin Bieber's got some tatts, and I love you, but I know I'm way tougher than you,'" he recalled. "I was always so scared to get one and then I got one."

And in a surprise twist of events, Justin almost ruined his first ink job of a Playboy bunny.

"I guess Justin was watching this interview in the future when I said I was tougher than him 'cause we played basketball like two days later and he knocked the whole thing off," he recalled. "It was just blood dripping down my hand. It kind of looks like my tattoo got dropped in lava, but I like the story anyways."

So who else will be Post Malone this Halloween weekend? We can't wait to find out!

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