On "Watch What Happens: Live" Wednesday, the "Neighbors" star was asked about the Twitter post — which said, "All jokes aside, Justin Bieber is a piece of s--t" — and he stood firmly by what he wrote. Then, he took the whole celebufeud a step further by calling him a few more names.
"Oh, it's because, in my opinion, Justin Bieber is a piece of s--t," the 31-year-old funnyman said with a laugh. "He seems like he is obnoxious and ungrateful and insincere. He puts people's lives in danger with his horrible, horrible behavior. And overall he acts like a piece of s--t."
Well, just watch his whole (hilarious) response to the fan question here:
Rogen's not the only one who has taken to Twitter to weigh in on the smug star, whose antics have been making headlines for over a year and is plagued with legal problems, including two arrests and various lawsuits. In addition to the "This Is the End" star's tersely worded tweet, which was retweeted more than 200,000 times, here are some other memorable Twitter scoldings he's received from his famous peers…
Olivia Wilde is not a fan of Bieber's obsession with going shirtless:
"Supernatural's" Jared Padalecki had a laugh over his mug shot:
Just saw the mugshot of @justinbieber. I gotta admit, she's kinda hot without all of her usual makeup on...— Jared Padalecki (@jarpad) January 23, 2014
Conan O'Brien has made fun of his bad boy rep:
Justin Bieber was involved in another all-out brawl. This one with Brownie Troop #152.— Conan O'Brien (@ConanOBrien) August 13, 2013
So has Ricky Gervais:
Seriously, who are these people that Justin Bieber can beat up? And why would they ever admit to such a thing?— Ricky Gervais (@rickygervais) March 27, 2013
And Jimmy Fallon, too:
Justin Bieber is being investigated for hitting a security guard with a Nerf dart. Bieber could face up to 6 months in time out. #fallonmono— jimmy fallon (@jimmyfallon) January 30, 2013
Zach Braff smoked him with a comment about his pot scandal:
Justin Bieber getting edgy by smoking a blunt is like putting 22" rims on a Kia.— Zach Braff (@zachbraff) January 5, 2013
Model Chrissy Teigen cut him down to size with a remark about his once-signature side-swept hairstyle:
I'm convinced Justin bieber is hiding an undeveloped fetus in his forehead. He should let it show and be a undeveloped fetus spokesperson— christine teigen (@chrissyteigen) May 9, 2010
Drake Bell has been feuding with Bieber for years now, making cutting comments about Bieber's height:
Justin Bieber is 5'6" now I understand why you guys love him!! He's the same height as all you 12 year olds! I totally get it now sorry guys— Drake Bell (@DrakeBell) April 7, 2013
"Hey! Don't make fun of my yellow spikey hat that is too big for my head! My rapper friends told me it's swaggy! pic.twitter.com/W49fdI3NJe— Drake Bell (@DrakeBell) April 15, 2013
And graffiti skills:
When is someone going to tell this idiot he can't draw.His art is almost as bad as his music. Talentless artless pic.twitter.com/N3xiPFfQNz— Drake Bell (@DrakeBell) January 16, 2014
And Rainn Wilson joked about, well, pretty much everything:
Which celeb's Bieber Twitter crack is your favorite? Let us know in the comments.