Continuity mistake: When Peter and Lois kiss and make up at the end, Tricia and the press run up to them. As they arrive there is no-one behind Tricia, but in the next shot there are three people behind her. (00:21:15)
Other mistake: In the flashback to Brian and Peter playing checkers, Brian's piece is not on the back row when he says "king me."
Chosen answer: It's a real song called "Elvira". Originally by Dallas Fraizer in '66, however, this version seems to be the Oak Ridge Boys cover version. However, the mega lesbians skip the verse and just sing the chorus after the opening line.
Bishop73