One if by Clam, Two if by Sea is episode 01 of family guy season 04. It was originally aired on August 1, 2001.

When Quahog is hit by a devastating hurricane, Peter’s favorite bar “The Drunken Clam” is destroyed. The owner cannot rebuild the bar so a British man purchases the bar and turns it into a pub where British families start congregating at the pub thereby ruining Peter’s old haunt.