"Cartman's Mom Is a Dirty Slut"
Season 1, Episode 13
The identity of Cartman's dad is up in the air, but he's pretty sure that Chef is his true dad, meaning he's half-black. Of course, being the ignorant cretin that he is, he starts dropping hip-hop slang, puts on a Flava Flav clock, and dons a flattop wig. We can't be mad at that track suit and four finger ring that says, "Pie." At least in that instance Cartman was expressing his true identity.