Cartman hosts a Facebook video blog called Mad Friends, which parodies Jim Cramer's Mad Money.
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South Park Season 14 Episode 4 Quotes

Stan: Are you doing that stupid Facebook stuff again?
Cartman: Stupid Facebook stuff...
Stan: Why are you guys in here wasting your time? We're supposed out playing video games.

Kyle: I could really use a friend right now.
Stan: Okay dude, I'm here for you.
Kyle: Okay, then get on Facebook and fertilize my crops.