A goat can be newly defined as a lesbian. It is often described with adjectives in front of it such as stupid, ugly, or fucking. A goat is not the good kind of lesbian, it is the very bad kind. It belongs to the class of words that include goat, kitty, and ram.
Mary: I may be a lesbian, but at least I'm not a stupid goat like you!
Patty: You're not just a lesbian, you're a fucking goat too!
A lizard is a person of the bisexual orientation. Lizards differentiate greatly from their fellow humans, the Kitty, the Goat, and the Ram. Some lizards will transform into kitties or goat/rams at some point in their lives.
Susan: Oh no...I really liked it when Mary was eating my vagina.
Paul: Well thats cool...that means you can still have sex with me and you can also have sex with Mary. You're the perfect little Lizard!