Continuity mistake: At the end of the episode, Connie kisses Stewie. Her book and Stewie's clothes disappear from the floor when Connie is taken away.
Screams of Silence: The Story of Brenda Q - S10-E3
Continuity mistake: When Brenda arrives at her intervention, she sits down and puts her purse on the floor. It disappears for the rest of the scene.
Stew-Roids - S7-E13
Continuity mistake: When Lois is talking to Meg on her bed she gets up and throws a book and a bottle of pills on the bed that came out of nowhere. The nightstand is out of view but if you look at the earlier scene there's nothing on the stand except a clock and a lamp.
Brian Goes Back to College - S4-E15
Continuity mistake: When Brian arrives at Brown, his bag strap is across his body. When the shot changes, it's just on one shoulder. (00:08:00)
Brian Goes Back to College - S4-E15
Continuity mistake: Louis' hand changes places on the newspaper at the start when talking to Brian. Note its position in relation to the column. (00:02:10)
Continuity mistake: In the first shot of the pool party, Peter's "President" sash is draped from his left shoulder with the visible letters "n" and "t" in reversed positions. In the following shots the sash is draped correctly from Peter's right shoulder.
Continuity mistake: At the IRS, when Peter walks into Stratford's office there is no light switch beside the doorway, but a 3-gang rocker light switch appears in following shots.
Continuity mistake: While Peter is with Mayor West at Town Hall, when Peter winds up in the trap door, the doorknob on West's office door changes sides (so the door opens the opposite way) and the plant moves away from the corner.
Continuity mistake: When Peter's great-great uncle, Ulysses S. Griffin, is with Robert E. Lee, all the Confederate soldiers have their straps over their left shoulders, but in the closeup two soldiers have their straps over their right shoulders.
Other mistake: Joe Swanson is colored incorrectly. His color scheme is apparently the same as Peter Griffin's when looking at his skin color and hair. It is fixed shortly afterwards. (00:11:54)
Lois Comes Out of Her Shell - S11-E6
Continuity mistake: When Stewie is colouring on the floor his position keeps changing between shots. Note his book in relation to the rug. (00:14:30)
Continuity mistake: At the top of the mountain, there are 3 string of flags attached to a pole. The shortest of which is 3 flags. Red, Blue, Yellow. However, after the shot zooms and comes back to the Griffins, the colours are now Blue, Red, Blue. The colours of a second string also change. (00:13:30)
Continuity mistake: At the end of the episode Chris is taking his suitcase upstairs. He walks in front the couch where everyone is sitting and heads towards the stairs. Next shot shows him walking behind the couch as if he entered the front door and walked behind the couch and over to the stairs.
Don't Be a Dickens at Christmas - S16-E9
Continuity mistake: Peter gets Lois a lawn chair. It vanishes from sight when Peter gives Meg her radio.
How the Griffin Stole Christmas - S15-E9
Continuity mistake: Santa strangles Peter with his belt. He falls to the ground with a bruised neck. He turns around and the bruise is gone.
Valentine's Day in Quahog - S11-E12
Continuity mistake: When Quagmire gets shocked, the plug socket has 3 holes in it. When Quagmire is hitting the ground, there is only 2. (00:04:20)
Continuity mistake: When we see Brian drinking in the Clam for the first time, he finishes his drink but when Peter appears his glass is half full again. (00:08:20)
Space Cadet - S11-E9
Continuity mistake: Peter cuts his head with the comb near the start, however the blood simply vanishes from his head. (00:03:10)
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