Quote from Bert in the episode Spoiler: Gary Dies
Denise: Funny story, actually, uh, Gary was seeing my friend Lisa. Gary: Oh, nice girl. Yeah, Jewish. Denise: Yeah, and anyway, Lisa got eaten by cannibals in Sherman Oaks. Stuart: Oh, no. Denise: Mm-hmm. Bert: Human meat isn't kosher, but I guess that only matters if the cannibals are also Jewish.