Uncle fukker is classic, Diddys Vote or Die and Work Mexican Work always have me when they pop into my head
Butters What What (In the Butt)
Video - Butters What What (In the Butt) | GameTrailers
so much better when you've seen the original
Wanna do it my butt, in my butt?? Oooooookay
That whole episode was epic. It had this song in there too if I'm not mistaken.
Canada On Strike Song - YouTube
They have had some outlandish ones lately, I prob couldn't even name a real favorite
I don't think I can pick a favorite either. There's too many.
This one is one of the more recent ones. Kinda weird but still funny:
South Park: Cash for Gold Song - YouTube
The end of that episode was hilarious