I went on a hookup once where the guy had put up a plastic sheet over a door and he sucked my cock through it. He must’ve liked me because he invited me into the room after and we had sex too.
There's one at the adult video store. Very clean two booth. The store isn't very busy, but I've never walked out without giving head. It is pretty exciting when there are people in the store. There's no doubt what is going on in the peep booths, and hearing strangers milling around mere feet away while I have a mouthful of cock is pretty hot. I haven't had luck sucking off more than two guys though.
Never seen one but sure heard about them. I was curious and open to try as long as it would be a woman behind. A blowjob is a blowjob, right? Just enjoy. But I don’t get turned on with the idea of a guy. I responded to an ad once and asked if the person is man or woman after the ad said WOMAN. I asked because of a previous experience where I scheduled to visit the person I would not be able to see behind the curtain, he then came clean that it was actually a man. Nothing wrong with that except A. He lied, and B. Men are just not my thing. Back to my second attempt, I then asked if I could reach and play with her breasts without seeing her. Breast lover looking for maximum pleasure experience. The back and forth ended. Again, lying. A huge turn off. I know they must have reasons to lie about their gender; attract men and get cocks to suck in a judgmental world, plain deceit to trick men, the excitement of the unknown a man has while getting a blowjob, etc
I don't know why someone would do something like that. There's no shortage of guys who love getting a BJ from other men. There's zero point to lying about being a woman.