krenwinkle
An ignorant biphobe. Specifically, someone who incorrectly believes that bisexual men are actually gay and hiding it. Like all biphobes, a krenwinkle unthinkingly subscribes to a patriarchal belief system that assumes everyone wants dick.
"I told my GF I was Bi, and she dumped me because she said I must be gay. She must have forgotten how much she screamed when I was banging her."
"Dude. What a krenwinkle."
"Dude. What a krenwinkle."