It's called deep-seated insecurity, honey

"It's hard to explain. Your whole life you think you're a heterosexual. Then you get pleasure from a homosexual. It disgusted me."

                       -- accused murderer trying to explain his over-reaction to his discovery that
                           the person he'd been having sex with was transexual

This quotation, taken from the testimony of the Gwen Araujo retrial, reminds one of how young men take pains to display their macho qualities and loudly object to the least intimation that they might not be, in fact, one hundred percent straight. They are terrified, utterly terrified, of being gay or being thought of as gay. So terrified that when something happens that demonstrates to them they are not as purely hetero as they've pretended to be, they go ape. Talk about disgusting.

Also: the same man said he found the transgender teen "attractive." And the above quote comes out differently:

"I think I was going through some kind of identity crisis because I seriously thought I was gay," Merel said. "Your whole life you believe you are a heterosexual and you find out you've been pleasured by a man. It disgusted me... Emotionally I was crushed."

Meanwhile, in the Los Angeles suburb of Monterey Park:

Take a daylight drive through Asian immigrant enclaves like Monterey Park and Irvine, and you'll see women trying to shield themselves with umbrellas -- even for the short dash from a parking lot into a supermarket. While driving, many wear special "UV gloves" -- which look like the long gloves worn with ball gowns -- to protect their forearms, and don wraparound visors that resemble welder's masks.

With pictures!