After Rachel and Monica throw water at Joey saying he's Drake's evil twin Chandler throws water at him too saying he forgot to close the toilet lid. It was an add lib by Matthew Perry.
During the end credits, while Phoebe teaches her boyfriend (played by singer Chris Isaak) her famous "Smelly Cat" song, he attempts to make it a mashup by adding his own single "Wicked Game", which can be heard in other episodes. He interjects with the subtle "And I..." portion of the song before she tells him to "pick a more masculine note."
The episode's title is based on the fact it was aired after Super Bowl XXX, where the Dallas Cowboys defeated the Pittsburgh Steelers.