A picture of Cartman, his mother, and all his potential fathers from the 12th Annual Drunken Barn Dance.
Added:

South Park Season 1 Episode 13 Quotes

Narrator: Who is Eric Cartman's father? Is it Chief Running Water? Or is it Chef? Is it Mephesto? Or that little monkey guy that follows him around? Or is it Mr. Garrison?
Jimbo: Nope. He's gay.
Mr. Garrison: You go to hell! You go to hell and you die!
Narrator: Is it Jimbo?
Jimbo: Daaagh!
Narrator: Or is it Officer Barbrady?
Officer Barbrady: Huh?! Where?!
Narrator: Or could it be Ned?
Ned: Could be.
Narrator: Or Mr. Broflovski??
Kyle: Dad, how could you?!
Narrator: Or is it the 1991 Denver Broncos? The answer is coming on an all-new South Park, in just four weeks.
Cartman: What?! Son of a bitch!!

Stan: Oh my god! They videotaped killing Kenny!
Kyle: You bastards!