A woman that is beyond the age of cougarhood (55+) but she sure isn't giving up on younger men. Thus, she becomes a supercougar.
Frank: Dude, she's like 70 years old. I can't believe you'd consider that!
Matt: No, man. She's just a supercougar now.
A supercougar is a woman who is a serious, serious cougar. I'm talking for like an entire group of really attractive, young, tan boys who may or may not be a wolfpack.
Marisa: Haha, you think a 14-year-old is hot.
Jessa: Coming from a supercougar, I do not find this insulting!