First of all... aaarrrggghhh! Why would you post something like that this early in the morning? You sick, sick person.
Secondly... guys are visual... we like seeing naked women. We like watching people have sex. We DO NOT like watching naked men. (a friend of mine says he has a "one penis" rule in his fantasies). Therefore, two women is the perfect visual/sexual stimulate.
Yeah. Sorry. The Hillary/Joe thing was a little rough. Hope you weren't eating your breakfast.