Big Man on Hippocampus - S8-E10
Factual error: Peter loses the last round on Family Feud. They got 199 points but needed 200 points to win $5000. Since they lost, they should've got $5 for every point which is $995. But they got nothing.
Big Man on Hippocampus - S8-E10
Character mistake: Brian says Pretty Woman was a 1980s movie. It was released in 1990.
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