The Man with Two Brians is episode 05 of family guy season 07. It was originally aired on November 9, 2008.

After watching Johnny Knoxville on “Jackass,” Peter and the guys film their own shenanigans. When Brian gets hurt, the family worries that he’s getting too old, so Peter brings home a new dog. Everything is great until the “new Brian” crosses the line and humps Stewie’s favorite toy.