Your favorite Southpark/Family guy song

As the title says the point is to say what is your favorite song from those two cartoons. I'll start off by saying that my favorite is "Unlce Fucka" from southpark the movie.

From south park I would have to say either "Kyle's mom is a bitch" or "What would Brian Boitano do?" From Family guy, I really liked the song from the end of the episode where Peter finds out who his real father is, an Irish town drunk, Mickey Mc-Finnigan.

"And all the girls catch the clap from my drunken irish pa". epic line

"Gay Fish" from South Park.

"Chocolate Salty Balls" By Chef from South Park.

It was a tough call but I have to go with "Merry Fucking Christmas" from South Park.