When, exactly, did the development-challenged male become a cultural archetype? You know the guy. Adam Sandler, Will Ferrell, and Seth Rogen, to name a few, have made careers out of playing him. Directors like the Farrelly brothers have turned him into box-office gold. We laugh at his antics and shake our heads at the same time. On the screen it's de rigueur for men to be boys -- but what about in real life?