Claire: "Did you know that all mammal groups have homosexual members, but that humans are the only mammals that display homophobia?"
Jane: "What does that mean?"
Claire: "You know, like animals have couples with two males or two females. But only in humans do other members of the group have any kind of problem with it."
Jane: "Oh, like the penguins that have two dads? But none of the other penguins care?"
Claire: "Yes, exactly."
Margot: "Wait, WHAT? Penguins are both male and female?!"
Everyone: [silence]
Claire: "Homosexual, Margot. Not hermaphrodite."