Wendy Testaburger is the most pomimently featured female student of South Park elementary... and with good reason!  Wendy is Stan's girlfriend and often in strong opposition of Cartman.  Wendy is featured less and less as the seasons go on, but the infamous bit at the start was Stan puking on her.

Wendy Testaburger Quotes

Wendy: Ms.Ellen, can I talk to you?
Ms. Ellen: Of course Wendy.
Wendy: I can't help but notice you've taken a liking to my boyfriend Stan.
Ms. Ellen: Well I've taken a liking to all of you. You're all so young and cute and full of life...
Wendy: Can I tell you something Ms. Ellen?
Ms. Ellen: Of course Wendy.
Wendy: Don't f*** with me!
Ms. Ellen: (surprised) What?
Wendy: You heard me! Stay away from my man, bitch, or I'll whoop your sorry little ass back to last year! (gets off the seat & walks away) Bye, Ms. Ellen.

Wendy: Stan, you know Valentine's Day is coming up.
Stan: Yeah, I know.
Wendy: I was thinking maybe we could go on a cruise.
Stan: Dude, I can't afford a cruise!
Wendy: I know. We could sit in a box in your back yard, and pretend it's a cruise.
Cartman: (Laughs hysterically) That's so lame!
Wendy: Then maybe we can dress up in costumes, like we're getting married.
Cartman: (Laughs) Stop it! You're killing me over here!

South Park Quotes

Stan: Hey Cartman, how come the birthday invitation you gave me says "Green Megaman."
Kyle: Yeah, mine says "Red Megaman."
Cartman: Right, that's what your supposed to get me for my birthday.
Stan: DUDE!?!?! You're not supposed to tell people what to give you for your birthday!
Kyle: Yeah, that's weak.
Cartman: Look it's very simple guys. "Green Megaman" goes with "Red Megaman" and "Yellow Megaman" to make the "Ultra Mega Megaman." You have to have all 3 or it doesn't work, see?
Stan: Up yours Cartman, I'll get you whatever the hell I want.
Cartman: Ohh!!! so maybe you don't want to have any of my moms Cake, Pie, and Ice cream then.
Stan: Oh "Gre..Green Megaman" it is.
Cartman: Now as you can see Kenny, you are to get me "Yellow Megaman," that's because the "Yellow Megaman" is the cheapest one and I know how poor your family is.
(Damien walks to table)
Stan: Hey!?!?! what do you think you're doing new kid?
Cartman: Yeah, you can't sit with us weirdo.
Damien: Infidel's!!!! I will turn you all into "Beasts of Burden"!
Kyle: You can't sit with us new kid, go find another table!
(Damien goes and sits with Pip)
Cartman: (sighs) Anyway Kenny, "Yellow Megaman" is only $8.95, so maybe your mom can put it on layaway and make payments in a year, or two.
(Stan, Kyle, and Cartman laugh. Kenny punches Cartman)
Cartman: AYYY!!!!

It's a man's obligation to stick his boneration in a woman's separation, this sort of penetration will increase the population of the younger generation.

</i> Cartman