One who is exhibiting cunt-like behaviors to an extreme degree, such as being an intolerable bitch and/or extraordinarily slutty. The invocation of such a word also likens the cunt to a humongous, slobber-slinging, flesh-eating dinosaur, which is, in fact what a cunt is.
Pimp, "Shut up, bitch! You be ackin' like a cuntosaurus."
a female who is a bitch and cunt
Virginia sue is such a cuntosaurus for not wanting to pay child support