A type of homosexual who once was effeminate and soft and did not like hard core, brutal sex (i.e. a bunny). However, had a run in with a bear (i.e. raging butch homosexual) and got messed up so bad that he now craves being caught by a bear again.
A bear loves nothing better than fooling a bunny that he's all sweet and then, BLAM!, that bunny is never quite the same. He falls into a depression, goes straight, or becomes a jack rabbit.