What is the opposite of a cougar as used in slang terms?

Opposite of CougarAccording to the Urban Dictionary, a cougar is a woman who likes younger men. The opposite of that would be a woman who likes much older men, but no Word could be found for that.

A couple of terms that have been used to refer to women who like much older men are "jail bait" and "gold digger." They are both derogatory terms that are best left unused.