macougar 

An older celebrity woman who chases younger celebrity men in an attempt to stay relevant.

Madonna chases after younger high profile men in an attempt to stay relevant, and in the public eye.....Macougar.

macougar by no-bod-e January 28, 2009

mancougar 

<n.>
1. a man aged beyond 45 who is still found sexually viable by younger women.
2. the male counterpart of a cougar

"Harrison Ford is a total mancougar!"

mancougar by Vanessa Valentine June 17, 2008