warning #1: Minors, please don't read this post. Easily offended men either. You have been warned!
warning #2: cynicism at work
he propably was pretty bad in bed... In my experience men prefer to brag about their abilities in that particular field. Only if they have nothing to brag there, they'll concentrate on other physical activities (like drawing circles). In the worst case, they'll buy a BMW or Porsche.