An individual who perfers mutually desired sex with animals. Also called a zoophile. Not to be confused with bestiality, wherein the individual uses animals for sex with no regard to the animals desire.
Joe? Nah, he doesn't date outside the ranch. Zoosexual, y'know.
a person, usually a heterosexual, who believes that heterosexuality is the only valid choice and that it is superior to all other sexualties. These people are also likely to subscribe to other ideas such as racism, sexism, and other forms of discrimination.
Heterosexuals who use the word gay in a derogatory manner (bad way) are being heterosexist in that they associate the word gay with some misfortune or ill effect.