A girl, typically under the age of consent, who goes for guys much older than she is (usually over the age of 21). The opposite of a cougar.
Josh: I want to have sex with Brittany. She seems like a good girl to have sex with.
Jason: No way, dude. She's 16 and just put a 21 year old in jail for having sex with her.
Josh: Damn, im 19. Guess im off her radar for a couple years.
Jason: Yeah, definitely. Shes an anticougar to the max.