Everybody Hates Chris - I Aint Sellin' No Food Stamps...
In the episode "Everybody Hates Foodstamps", Rochelle runs into Sheila and a friend of hers named Pam, whom she had tried to sell her foodstamps to. In an atempt to redeem herself, Rochelle claims she wasn't selling any foodstamps, and then later on end up going to have her hair done at Pam's salon, ironicly paying her with foodstamps.
Then, a few episodes later in "Everybody Hates The Gout" Rochelle comes home to find a bunch of neighborhood women in her apartment, including Sheila and Pam. Once again the foodstamps are brought up, but here's the slipup, Pam remarks "I thought you weren't selling foodstamps?" Didn't she pay her with them?