Seth Rogen Justin Bieber Twitter Hate! 'Neighbors' Star Tweets That Bieber 'Is A Piece Of S**T' And Explains The Reason For His Contempt!

Seth Rogen is not known for pulling punches and the gloves are thrown out for Justin Bieber! The "Neighbors" star compares him to co-star and teen heartthrob Zac Efron and how they are worlds apart despite being in the same category.

Rogen was in the Howard Stern Show (on radio) and as the norm in that show, there are no holds barred on the language and subject matter. The "Knocked Up" star details his gripes starting from the day he first met the Biebs in a German talk show. He narrates how one of Justin's aides called him from his dressing room because the "Baby" singer wanted to meet him. He continues:

"And it was weird, I was like, 'Sure, I'll meet him.' So I went outside to meet him and he was acting like I asked to meet him. It was very nonchalant, 'Yo man. Wassup,' and I was like, 'What the f**k, I don't give a f**k about, 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 not meeting you... But I was like, fine, I wouldn't have said anything, I was like, 'He's a bit of a mother*cker. Whatever. He's young, the kid's a dick.

And then I met him like two years later maybe, I saw him again at an MTV awards show and he literally had a snake wrapped around his f*cking wrist that he was wearing as an accouterment and I was like, 'What the f*ck,' and I talked to him for like five minutes and I was like, 'Fuck this kid.' He was trying to be funny with like, 'Hey this snake.'"

He also expounded on how Zac Efron who started as a Disney icon, was very considerate of how a person of Rogen's age would dislike him. Bieber was not sensitive at all and Seth described him as having "zero humility."

The story behind the infamous tweet: "It was a nonchalant tweet..I was about to step inside a meeting then I tweeted it. I walked out of the meeting and it was retweeted about 200,000 times. I must have hit something."

All jokes aside, Justin Bieber is a piece of shit.

— Seth Rogen (@Sethrogen) January 23, 2014

There is no response from Justin Bieber's side, but there probably would have been a lot of upset "Beliebers."