Other mistake: Throughout many episodes, it's discovered that anybody that touches Death immediately dies. When Stewie learns that Death has come for Peter, he immediately touches his finger to lead him inside but manages to live.
Other mistake: In the scene where Einstein is stealing Smith's theory, when Einstein pulls the metal bars down, they should land on Smith's head, but Smith inexplicably moves forward and the bars land on his back.
Other mistake: In the flashback to Brian and Peter playing checkers, Brian's piece is not on the back row when he says "king me."
A Picture Is Worth 1,000 Bucks - S2-E11
Other mistake: Brian says he met Antonio Monatti when he was with Andy Warhol in the '70s. This is an impossibility. Only several episodes earlier (in episode Brian in Love), we find out that Brian is 7 years old.
Fifteen Minutes of Shame - S2-E12
Other mistake: Right at the end, when Peter takes out the Bible, the front cover is on the wrong side, i.e the back.
Other mistake: After Brian says Chris is tweaked and Chris says maybe the toad is Meg's, the bubbles in the aquarium stop moving. (00:03:35)
Other mistake: When Peter is dancing to his musical number on top of the table, his head continually shrinks until the end of the shot, where his head is around a third of what it was originally. (00:11:00)
Other mistake: While Lois is kneeling at the entrance of the playground with Stewie, a woman is walking by carrying a baby. The playground gate entrance is casting a long shadow; however, Lois, Stewie, and the woman are not casting shadows in the same way. (00:03:35)
Other mistake: This mistake appears to only be in the digital version of the episode on Hulu and Disney+. After Stewie fires the net gun at the other kid in the Duck Duck Goose game and says he's still it, we get our first real look at Janet as she giggles at Stewie. For a few frames as it zooms in on her, the top of her head is cut off and blinks out of existence. (00:05:55)
Other mistake: After the Kentucky cut away with Peter, we're back on the plane. He sits down and is surrounded by the exact same other characters from the last plane we saw him on: the pink lady sitting next to him and the man in the green suit sitting behind him. This is after at least a day or two in the episode, and Peter is flying all over the world on different planes as a freeloader with his wife's new job. It's next to impossible that he'd be sitting next to the same lady and in front of the same man again. (00:09:30 - 00:15:10)
Other mistake: When Peter and Lois begin to search for the black market, it then cuts to an exterior shot of Stewie's daycare. In this shot, not only is the entire left side of the chain link fence missing, but bizarrely, this missing gate still casts a shadow on the sidewalk. (00:18:40)
There's Something About Paulie - S2-E16
Other mistake: Peter walks into the living room and finds Lois on the couch. Just after he asks her if she's been drinking, she starts to sit up and then suddenly the entire episode starts bobbing up and down. Like the show is on a camera bouncing in a car. This lasts a couple of seconds then stops. I checked on Disney+, Hulu, and WCO. Each of these had the same camera jitters in that moment. (00:00:45)
There's Something About Paulie - S2-E16
Other mistake: Peter follows the mobster to the "pet store" and is standing on the sidewalk when the mobster gets out of his car and goes inside. The street here is comically disproportionately small. So much so that when Peter walks across it, he clears the entire road in two steps. (00:14:40)
There's Something About Paulie - S2-E16
Other mistake: After the car bomb destroys their new blue car, the groom at the wedding comes out to warn them too late, then runs off. As Peter and Lois are turning around in the next shot to walk, the cars behind them are disproportionally small, with the scaling being off here. (00:21:35)
He's Too Sexy for His Fat - S2-E17
Other mistake: After the cutaway with the lemonade stand not taking credit cards, the episode cuts to an exterior shot of the hotel that the Griffins are now staying in. For a large hotel like that, the parking lot is way too small, showing only two cars in the front with only three visible spots, and one car parked in the street behind the building. Far too few spots and far too few cars considering how many room lights are turned on. (00:05:50)
Other mistake: When Peter is digging a hole in his back yard, he uses his shovel to cut the power supply to all of Quahog. We see Joe watching TV and Quagmire messing with his sex doll. The power cuts off, and so then Joe's TV turns off and Quagmire's doll turns off. However, the lights in the rooms they are in stay on. The power being cut would have turned off the lights also. (00:05:32)
Other mistake: When Peter sits down with Mayor West to discuss terms, West says, "Thank you all for coming." As he does, he tilts his head down and the bottom half of his nose disappears until he moves his head again. (00:20:38)
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