If you are a heterosexual male who has never got a blowjob from a bisexual or a gay male before then how can you tell the difference from getting a anonymous blowjob at a glory hole from a heterosexual female or a bisexual male or a gay male?

Well I find that men give a better blow job than most women because men know how men like their cocks sucked.
I have never given a blow job that the man has not enjoyed.

I am a bisexual male that would rather give a blow job than get one.
I have sucked off lots of gay men, bi men and married guys that like to think of themselves as a straight man.
I have never been to a glory hole.
But I would like to.....
but of the three,
Gay...
bi...
Married and thinks of himself as straight.
I prefer the married guys, because gay and bi men want to give AND get,
Generally.
Married men whose wives won't blow will come to me,
But never EVER ask to return the favor.

I am thankful for their wives, because without frigid women,
I might never have sex.

As far as feeling the whiskers,
I have known a few smooth gay men that would have made very pretty passable cross dressers. But they were gay, knew they were and did not want to try and pass for a woman.

And in a glory hole setting, I am certain, the guy would not know if it was a guy or girl blowing him, but it makes him feel better about himself thinking it was "Probably" a woman.

And of course, some women DO like to give anonymous blow jobs. but I would guess 98% of the cocksuckers in glory holes are men.

When it cummmmms to getting a bj a mouth is mouth but in my experience i know that men give the best head.

If a heterosexual male ever got a blowjob from both
a bisexual female and a heterosexual female,but he never got a blowjob before from a bisexual male or
a gay male then how can he be able to tell the
difference from getting a anonymous blowjob at a
glory hole from a bisexual male or a gay male?

when you feel his whiskers rub your cock that is how you tell, lol