"In my opinion, Justin Bieber is a piece of shit,” Rogen told host Andy Cohen. "He seems like he's obnoxious and ungrateful, insincere, and he puts people's lives at danger and overall he acts like a piece of shit."
Whoa! Tell us what you REALLY think Seth!
The actor didn't just talk smack about the Biebs though—he also dished on which celebrities he’s smoked weed with!
And you may be surprised by some of the names!!
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