I'm sorry if this question is a little odd, but as a woman I have ZERO idea why something is... I have seen a lot of man on man porn. It seems when men are kissing, performing oral, or a number of other things, they tend to both become very aroused and their cocks are hard as I would expect. BUT when I see a top riding a bottom, more often than not the bottom can be VERY into things, but as soft as soft gets, even if he's masturbating during this. Can anyone tell me why this would be? It's not the same in every porn, but it's so often that I just had to ask. Any insight would be very appreciated. Obviously I'm lost. Lol.