Tina Fey's Liz Lemon abides by a diet that is notoriously unhealthy, and often on the outer boundaries of "food." She famously received a false positive on a pregnancy test after gorging on "Sabor de Soledad" cheese-puffs, a fictional Mexican snack made with evaporated bull semen. She composed a song dedicated to "night cheese," the cheese she ate on her couch at night. In the episode "Sandwich Day," Lemon eats tinfoil, because it is acting as a barrier between her and a sandwich.