I beg your pardon?!
There is a g spot in EVERY mans Ass...I think of it a bit like the clitoris women before the sexual revolution weren't in touch with this erotic spot and it carried shame. Some "STRAIGHT" men like to be fucked in the Ass I know this with great authority as a close friend of mine is a high class hooker and guys seem to want this more than anything else.
Also just because a guys wears nail polish doesn't mean he wants a cock up his ass....???
You seem a bit homophobic and out of touch with your own body. Try a finger up there while you wank feeling pleasure in your ass doesn't mean you gay. you never know you might want to try a dildo even a cock in the future.