Few experiences come to mind. First in college. It was a woman in our friend group’s birthday, so my friends and I offered to let her have the party at our house. I cannot remember how the conversation started, but earlier in the week it had been decided that she wanted a lap dance for her birthday, so I said I could do that for her. At some point in the evening she said “I’m ready for my lap dance” and looked at me, so I said let’s go to my room. For some reason 5 women and 3 other guys ended up coming. So I put on some music and us guys did little strip teases and lap dances for the women. I was a little nervous to reveal my cock initially but as I slowly lowered my underwear and revealed just the length of the shaft all the women gasped and the other guys kinda stopped dancing for a minute. It was at that moment I knew, and not more than 10 minutes later did everyone know.
In my 20s I worked with a guy who was in a poly relationship with two other men. They’d throw some pretty wild sex parties at their place. Usually they are essentially orgies for gay men, but when they were going to be a bit more diverse he’d invite me and our other friends from work. The first one I went to was an underwear party. Pretty simple dress code, just be in underwear. So I wore some boxer briefs and purposely chose a lighter color to accent shadows a bit. Haha. Shortly after I arrived with my date (a woman I worked with who I’d never taken on a date before) a gay man walked past me, he stopped, fell to his knees and said “this is a fucking gift, you have an amazing gift!” He then, “I hope you’re not straight, you’re straight aren’t you?” And I said yes. He was very respectful but disappointed. Haha.