Trashini

She was the smelliest girl at Oscar's high school, as he recalls. In a flashback, we see her accompanying a nerdy Oscar to the school's "Enchantment Under the Sewers" dance and he's pleased when she tells him she's having a rotten time. The waiter takes it literally and slops the slice onto Oscar's tuxedo, leaving the first of many memorable stains (shaped like a triangle).