Family Guy (1999)

Underage Peter - S14-E14

Plot hole: They're in the Clam complaining that they can't drink when they make the revelation that Brian can because he's technically 56. But Quagmire should be able to drink, as in a much earlier episode, he's revealed to be over 60.

Baby Not On Board - S7-E4

Plot hole: Stewie gets out of the car seat and goes back to bed, leaving the blanket at the bottom of the seat. When they get to New York, Lois goes to get him out and realises he's gone. But when they started the trip the blanket was covering the entire seat to make it look like Stewie was still in it. So who ever "covered" him up knew he wasn't in the seat before they set off. (00:13:45)

Road to Germany - S7-E3

Continuity mistake: After getting the uranium, Stewie places it in the time pad and then puts the pad in his jacket pocket. After being confronted by Hitler who promises to spare them if they sing a musical number, Mort interrupts them, and it's seen that he is now standing on the time pad.

Trivia: The voices of Brian, Stewie and Peter (as well as other minor characters) are all voiced by the creator, Seth Macfarlane.

Trivia: A Quahog is another name for a clam, thus all the jokes and places in town (like the drunken clam bar) the show makes reference about.

Tobin OReilly

He's Too Sexy for His Fat - S2-E17

Trivia: In the shot of the Quahog Pest Control building you see a blue termite (Nibbles Woodaway) on the building. New England Pest Control in Providence, Rhode Island has the same bug on top of its building.

Barely Legal - S5-E8

Connie: You know, Meg, there's no dogs allowed. So, you're going to have to leave. But Brian can stay.
Brian Griffin: You know, Connie, I think I have this theory about why you're such a bitch.
Connie: Excuse me?
Meg Griffin: Brian, let's just go.
Brian Griffin: No, no, no, no, no, no. Hang on a minute, Meg, hang on. You see, Connie, you're popular because you developed early and started giving handjobs when you were twelve. But now you can't stand to look in the mirror because all you see is a whore. So you pick on Meg to avoid the inevitable realization that once your body's used up by age nineteen, you're gonna be a worn out chalky skinned burlap sack that even your own stepdad won't want. How is that? Am I in the ballpark?
[Connie runs off crying].

When You Wish Upon a Weinstein - S3-E22

Peter Griffin: You better watch who you're calling a child Lois. Because if I'm a child then you know what that makes you? A paedophile, and I'll be damned if I'm gonna stand here and be lectured by a pervert.

Lois: Hello?
Peter: I can't take the trash out today, I'm working late at the office.
Lois: The caller ID says you're calling from the kitchen. In fact I can see you.
Peter: [Edging sideways.] OK, can you see me now?
Lois: No.
Peter: Now I am at the office.

Business Guy - S8-E9

Question: In the episode, Peter threatens to fire Lois, and she responds with "you wouldn't" and Peter then replies with "Oh really, does the name Lacey Chabert mean anything to you?" which in turn makes Lois go wide eyed and reply with "OK, I'll behave" and Peter then goes on to add "Yes you will" Can anyone explain this joke if it is a joke to comprehend?

Brian Sings & Swings - S4-E19

Question: In this episode Meg pretends to be a lesbian, when she calls herself a 'mega lesbian' it shows four other 'mega lesbians' singing something on deep voices. What song are they singing? Is it a real song?

strikeand

Road to the Multiverse - S8-E1

Question: When Stewie and Brian are in the Disney universe, why did everyone attack Mort?