It's safe to say there's no love lost between Justin Bieber and Seth Rogen.
After the Neighbors star tweeted that Bieber was a "piece of s**t" in January following the singer's legal troubles in Miami, and went on Howard Stern recently to elaborate on what he felt was Bieber's less than stellar attitude when they met, Bieber finally responded via Twitter Thursday.
Related: Seth Rogen Recalls Meeting Justin Bieber: 'F*ck This Kid'
Perhaps adding insult to injury -- or maybe just an honest mistake -- Bieber spelled the comedian's last name wrong in the tweet.
During the Howard Stern interview Monday, Rogen recalled meeting Bieber when "Bieber fever" was just taking off, and alleged that although the Baby singer's people asked him to meet Bieber, Bieber was the one who acted "nonplussed" to meet him.
Things didn't go much better two years later at the 2011 MTV Video Music Awards.
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"He literally had a snake wrapped around his fu*king wrist that he was wearing. I was like, what the fu*k? And I talked to him for like five minutes and I just remember thinking, 'F*ck this kid,’” Rogen laughed. "Justin Bieber has ... no humility, no awareness, no sense that, 'Since I appeal to young, young people, maybe a grown man who works in comedy doesn’t give a sh*t about me? And maybe I should act in such a way that maybe this isn't the greatest experience of his f*cking life to meet me?' And I just remember thinking he's a piece of sh*t.”