South Park: Bigger, Longer & Uncut (1999)

Other mistake: When the switch is thrown to electrocute Terrence and Phillip, it's pulled downwards. A few shots later, we see Cartman jump in to save T and P by turning the switch off. He also pulls the switch downwards instead of pushing it upwards. (01:06:05)

Cartman: Don't call me fat, you fucking Jew!
[Gasp from the class.]
Mr. Garrison: Eric! Did you just say the "F" word?
Cartman: [confused.] Jew?
Kyle: No, not Jew! He's talking about "fuck"! You can't say "fuck" in school, you fucking fat ass!
Mr. Garrison: Kyle!
Cartman: Why the fuck not?
Mr. Garrison: Eric!
Stan: Dude, you just said "fuck" again!
Mr. Garrison: Stanley!
Kenny: [Muffled.] Fuck.
Mr. Garrison: Kenny!
Cartman: What's the big deal? It doesn't hurt anybody. Fuck fuckety fuck fuck fuck.
Mr. Garrison: How would you like to go see the school counselor?
Cartman: How would you like to suck my balls?
[Gasp from the class.]
Mr. Garrison: What did you say?
Cartman: I'm sorry. I'm sorry. Actually, what I said was...
[Cartman pulls out a bullhorn.]
Cartman: HOW WOULD YOU LIKE TO SUCK MY BALLS? MR. Garrison.
Stan: Holy shit, dude.

Trivia: This cracks me up every time I see it. If you think Satan is really cut have a close look at his abs. They are in the shape of a big penis. (00:27:55)

Question: When Cartman says he saw Kenny, Kyle says he sees Kenny everyday, on the face of every child, on the smile of every baby and he and Stan starts laughing. What does the joke mean?