The horrific bullying that men do to each other is the result of bullying women. They use the same tactics to create internal hierarchies that establish dominant traits that ostracize the alternative group. The psychological result can actually be worse for sensitive guys than it is for the average women - possibly. I HATE every aspect of male dominance of this form.
I dunno, I think it's more a case of people being shamed for deviating from their gender norms. At least, I don't see how this type of bullying is unique to men.
For instance, I don't see how the "be a man" treatment is all that different than when women say: real woman have curves! Real women this, real women that, etc. This presumably ostracizes women who don't fit this criteria of a "Real Woman" Also, one of the meaner insults you can make about a woman is that she looks like a man. If a woman belches, and scratches her crotch in public, people dismissively say she's acting like a dude.
Furthermore, I don't see how the "man up" concept is limited to men saying it to other men. Women say "be a man" as well. I'm often told to "grow a pair", "man up", etc, from women. One time, a bunch of girls at my work were talking about how weird guys are, and I said:
Well, you don't know what it's like to be a guy. One of them quipped back:
Neither do you! and they all burst into giggles. I'm not especially effeminate, but I'm often out of step with "normal" male behaviour, so therefore these women seem to think that makes me less of a man.
Women shaming guys for non-masculine behaviour is nothing new, either. Historically, women would shame men who chose not to go to war. In Britain during WWI, it was common practice for women to give white feathers (symbolizing cowardice) to men who were suspected of dodging military service. This wasn't just traditional or less educated women who did this either. Prominent feminists and suffragettes like Emmeline Pankhurst supported this practice, and also lobbied for an involuntary draft of men.
Now, don't get me wrong. I don't think women are worse than men when it comes to this behaviour. Men are the worst perpetrators of those "man-up" sort of statements. I just chafed a little at the way you framed the issue as:
The horrific bullying that men do to each other is the result of bullying women.
I dunno if I buy that, based on what I read in your post, at least.
I do like your laser-boob proposal, though.
