Continuity mistake: Peter gives Chris a carton of cigarettes and lights one for him to smoke. Camera cuts to Lois, then back to Chris and the cigarette in Chris's mouth and the carton on his lap are nowhere in sight.
Continuity mistake: When Carter destroys the bench after being the first contestant out of wining the old dirt bike, in the digger he backs off screen and you hear a crash and a car alarm, but when the shot is widened you see two cars where he backed into and both are undamaged.
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