Id have to say the way the skin rolls inwards just at the towel level. That he was wearing boxers as not to expose himself to the other model (probably a preference to atleast one of the two).
pretty funny. The obvious questions... Why is he showing his manhood outside under a bright blue sky? and uhhh why is she laughing at his bellybutton? :)
Of course this made me giggle and all. Nothing wrong with it. But I think a different title would only make it better! (not that I can think of one, so oh well!) Great idea and well executed.
Intresting... Perhaps a slightly wider shot would give it more context, Both subjects are well lit but their is something funny going on around his hand, Nice idea and well shot, Good luck