Later, while talking to Apu, who doesn't eat any animal products, she learns that giving up meat isn't enough to earn the approval of vegans. "You must think I'm a monster," says Lisa, when she discovers that Apu doesn't eat cheese. "Yes indeed, I do think that," he says. In the 2000 episode "Lisa the Tree Hugger," her hopes of impressing teenage environmental activist Jesse Grass with her vegetarianism are dashed when he negs, "That's a start," and adds that he's "Level Five Vegan... I don't eat anything that casts a shadow." He then reproaches her for not composting in her pockets.