Justin Bieber has responded to Seth Rogan's "Piece of s***" remark by saying that he is sorry that he didn't bow down to him when he first asked to the comedian.
The 20-year-old popstar took to Twitter saying that he was probably a bit shy and didn't want to be over the top but he still loves Rogan's movies, Us Magazine reported.
Rogan had tweeted in January, after the singer was arrested for drag-racing in Miami, that "he was a piece of s---".