Kenny McCormick is the fourth member of the South Park main kids and is the quietest of the bunch as his parka covers his mouth.  However, if you listen carefully you can hear the extreme potty mouth of his hilarious character.  Kenny is from a poor family and has many siblings.  The running gag in the first five seasons was Kenny would be killed off each episode, only to be brought back with no explanation.  He was eventually killed off in season five for good only to be brough tback in season six.  Now they don't kill him so much.  It's good cause we like Kenny.

Kenny McCormick Quotes

Kyle: The next time Shelly is going to hit you tell her: "Shelly, you're my sister and I love you."
Kenny: And I want to take off your bra.
Stan: Sick dude! She's my sister.
Kyle: Try it!

Stan: Holy crap! Wendy wants to meet me at Stark's Pond after school today.
Kyle: Wow. Maybe you can kiss her.
Cartman: Or slip her the tongue.
Kenny: (muffled) Maybe you can touch her pussy.
Stan: What? How do you know she has a cat?

South Park Quotes

No no no, I'm telling you guys, music videos have devolved to nothing but pretty girls, wearing skintight clothes, singing about their vajayjay. Used to be chicks talking about relationships, now it's all my vajayjay this, my vajayjay that. But clearly that's what sells.

Cartman

Kyle: You can't die Mr Hankey, you can't.
Mr. Hankey: (Cough)
Kyle, before I go, there's something I must tell you. Come closer Closer
Kyle: What is it Mr Hankey?
Mr. Hankey: There is another Skywalker. Uhhh (Mr Hankey dies)
Kyle: Nooo
Mr. Hankey: (Mr Hankey appears to be alive) Wait Kyle.
Kyle: What is it Mr Hankey?
Mr. Hankey: Come closer
Kyle: What is it?
Mr. Hankey: Closer
Kyle: Yes?
Mr. Hankey: Closer! (Pause) One time, when you were sleeping, I put myself in your mouth and had my friend take a picture. Uhhh (Mr Hankey dies)
Kyle: Nooo