What do you call a forty-five-year-old guy with a twenty-five-year-old girlfriend? Successful.
What do you call a forty-five-year-old chick with a twenty-five-year-old boyfriend? Cougar.
I just wrote a thing about this because I saw a press release on a cougar convention thing:
http://www.blueblood.net/2009/08/cougars-convention/