I've sucked cock through a glory hole a few times. It's been years. I'm a guy by the way (bi, I'd rather be with women, but if a dicks in my face, I'll take care of it). I've had good and bad experiences doing it. The first time was an older guy whose cum tasted terrible, almost ruined me. Another time, I was happily sprayed with cum and had to leave there wearing a massive cumshot on my clothes. Good old days...