Road to the North Pole - S9-E7
Continuity mistake: At the first house, the bag in the sleigh with all the presents in is ripped open when it falls off the roof. However, when Stewie and Brian leave the house, there is no tear in the bag at all. (00:32:55 - 00:36:45)
Road to the North Pole - S9-E7
Continuity mistake: When Stewie and Brian are taking the unconscious man to the closet, a blood trail is left behind him. However, when Stewie and Brian get the man into the closet, there's barely any blood there. (00:34:45)
Road to the North Pole - S9-E7
Continuity mistake: When Stewie and Brian put out the presents in the first house, there is a plate with three cookies on behind them. But when Brian goes to eat the cookie, there is only one cookie there and no plate. (00:33:20)
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