According to Rogen, 32, Bieber asked to meet with him, and then acted as though Rogen had requested the meeting when they actually did get into the same room.
"What the f--k, I don't want to meet you! Don't act all nonplussed to meet me. I didn't want to meet you. I was totally cool with not meeting you," the actor said he thought to himself at the time. "I was like, 'He's a little bit of a motherf--ker.'"
But that wasn't the only bad experience.
"I saw him again at like an MTV Awards show," Rogen added. "He literally had a snake wrapped around his f--king wrist that he was wearing, like a live snake as an accouterment."
"I was like 'What the f--k?' I talked to him for like five minutes. I just remember thinking, 'F--k this kid.' I remember thinking, 'He's a piece of sh--.'"