S03E13 Screwed the Pooch
In an effort to finally be accepted by Lois' parents, Peter tries to become more cultured. His efforts fail, however, until he's invited to play poker with his father-in-law's friends, Bill Gates, Michael Eisner and Ted Turner. He wins them over, and soon starts feeling like one of the family. Brian, meanwhile, feels his sex drive starting to run wild, until he finally loses control with one of Mr. Pewterschmidt's prize racing dogs.