EDIT: Okay, I'll cut it out for you. The moral of the comic is "The guy in the green shirt is an idiot. Men are not all rapists, and it's men who claim they have no control over their sex drive 'because they're men' who is giving other men a bad reputation, because by saying that they're saying all men are like them"
This idea that men are all rapists has become more and more widespread (well, it has always been around, but now we notice), and unfortunately a lot of young men aren't helping matters when they use rape as a threat in online gaming and such. They may not mean it, but on top of that a lot of men use "Well, I'm a man, and that's just how we are" as an excuse for cheating, indicating they have no control over their sex drive. And that have had some pretty bad consequences for men (as well as women, but we're talking about men this time).
Because these days people don't just think "Rape = Raping women" but also "Rape = Raping children" so in a lot of kindergartens and other places for children men aren't allowed to be alone with the kids "Because you never know". Even a father has to watch out or people might suspect him of raping his children. And it has gotten so bad that other men think the same, even though they themselves would never dream of raping anyone.
The green shirt guy in the comic is one of them. He has never raped anyone, but he just knows
it's going to happen one day because he has a penis.
So I advice people not to blame any actions on their own or other's penis, tempting and easy as it may be. It will not lead to anything good.
EDIT: Pfff! I don't mean men think of themselves as rapists, but of other men as rapists. It's just the green shirt guy who is overdoing it a little.