Continuity mistake: Brian's newspaper's name changes from "Daily Informant" to "Daily Tim...". The newspaper also turns upside down between the two shots. (00:11:15)
Continuity mistake: Stewie tries to get his mind control device back from the kitchen. The cupboard door is open when he falls. In the very next shot, Lois turns the light on in the kitchen, and we see the door has closed without anyone touching it. It is open again after that. (00:09:50)
Continuity mistake: When Peter is testifying in court, the microphone on the witness stand disappears in the shots from the judge's point of view. (00:18:43)
Continuity mistake: In the first shot of the flashback showing the family watching "Philadelphia," Peter's eyes are about twice as big as they normally are due to the Irish coffee, but are instantly back to normal in the next shot.
Continuity mistake: When Lois, Meg, Chris and Stewie first enter the courtroom there is a brown-shirted man sitting next to Quagmire. In the next shot, there is a pink-shirted man there. (00:18:25)
Continuity mistake: When Peter says he's gonna buy his family the biggest meal they've ever had, Stewie's eyes are drastically bigger than usual. (00:13:15)
Other mistake: When Stewie demands his device, he says, "Like a box of active grenades," and she gives it back. The pins weren't pulled, yet he runs and it explodes. (00:18:00)
Continuity mistake: The welfare cheque that Lois gets from the postal worker is addressed: 'Peter Griffin, 72 Spooner St, Quahog, RI' but the Griffins live at 31 Spooner St. every other time their address is mentioned. (00:14:26)
Continuity mistake: When we first see the two commentators in the box, the blue suited one doesn't have a mug, but in the next shot, there is a mug next to his microphone. (00:15:35)
Revealing mistake: Peter's right eye overlaps his nose when Lois reminds him about getting drunk off communion wine at church. This mistake was later referenced in "Back to the Pilot." (00:02:50)
Continuity mistake: When Stewie is acting like a ninja to get his gun back it is in a cupboard with 2 shelves. Yet when the gun is lifting him up there's only one. (00:09:40)
Continuity mistake: During the breakfast scene when Peter is lying on the table, the food on the plates changes positions between shots. (00:04:45)
Continuity mistake: When Meg is looking through her magazine in one shot there are just some adverts, but in the next shot there is a full page picture of someone. (00:01:20)
Other mistake: When Peter and the gang are watching TV drinking beers, the TV doesn't have any cables on the back. So how has it got power or a TV signal? This mistake was later referenced in "Back to the Pilot." (00:04:16)
Revealing mistake: When Brian asks Peter how much money they're getting from welfare, his neck is drawn over his collar, making his head look like it's disconnected from his body.
Other mistake: After Stewie gets his toy back from the cupboard, Lois and Peter walk into the kitchen. Lois asks Peter, "Since when are you so concerned about our food budget?", and in the next shot of Peter, the buttons on his shirt are missing; then they reappear in his next close-up. (00:10:01)
Other mistake: After the scene of the family watching Philadelphia at the movie theatre, Peter promises Lois that not a drop of alcohol is going to touch his lips. In this shot, Peter's buttons are on the left side of his shirt instead of the right like they should be. (00:03:39)
Continuity mistake: When Lois is outside, the mail lady gives her Peter's check. The front door has no window on the outside, yet inside there is one. (00:14:25)
Revealing mistake: Peter's right eye overlaps his nose when he's watching TV with his family.
Continuity mistake: Stewie's overalls are missing during one of the shots of the Griffins at court.
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