Mozilla Half Naked Women

So my husband changed his theme on Mozilla to a half naked woman with big breasts. I got pissed at the sight and asked him to change it. Of course he refused. Since I don't have the same version of Mozilla I just searched for a naked man on google and made it my desktop. He just laughed. Why doesn't this bother him like it bothers me? He's watched porn- so have I- and I don't care about this. But for some reason this half naked woman on his stupid Mozilla really pisses me off. I could punch him. Instead I make jokes about how much bigger this man's penis is that I have on my desktop than my husbands- again he laughs. UGH.. Men..