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
Other mistake: Cleveland's house, across the street from the Griffins, is absent in the opening overhead shot. Then the scene changes to inside, and we can see his house through the window.
Road to the North Pole - S9-E7
Continuity mistake: Before the start of 'Christmas Time is Killing us', Brian and Stewie hold each other. However, in the very next shot, they are standing normally.
Road to the North Pole - S9-E7
Continuity mistake: In the robot scene, 'Brian' is holding up a document. When 'Robert' says "Well, it's true", it cuts to a close up of Brian and the document has disappeared.
Road to the North Pole - S9-E7
Continuity mistake: At Santa's Village, the roller coaster in the background changes location and track layout.
Road to the North Pole - S9-E7
Continuity mistake: At the end when the camera pans out from the Griffin house, Cleveland's old house is nowhere to be seen. (00:42:10)
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)
Road to the North Pole - S9-E7
Continuity mistake: When Brian is crashing his car in Canada, a tyre smashes through his window. At no point does Brian take out the tyre, but when Stewie and Brian get in the car to go to the North Pole, there is no sign of any tyre whatsoever. (00:14:10 - 00:15:50)
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