Daniel C. BrittDrool Brittania: British cougars Rita Sangha (left), 39, and Bea Cameron, 45, make nice to the camera during August's "National Cougar Convention" Do people complain to Rich Gosse about the use of the term "cougar" -- previously applied to a 1970s-era muscle car and, of course, a beast -- for older women with a yen for younger men? Yes. Yes they do. All the time. But he doesn't care. "We used to have cougar parties in San Francisco before the term 'cougar' was invented," says G