Indirectly. It was freshman year in a triple. Before either had awoke, I had cum in bed quietly into a wad of tissues (which I would always slide down the side of my bed against the wall for later disposal). We all got up soon thereafter. In preparation for my shower, I took of my underwear and threw it in my hamper. Our towels hung inside the door, so this involved walking naked across the room. Such incidental nudity was no big deal...we all did it. That particular morning, I was in the middle of talking with my roommates at the time, so I made normal eye contact, etc. When I got to my towel, I glanced down and noticed a large piece of tissue was stuck to the tip of my dick. They never said anything, but there's pretty much no way that they didn't see it and it's pretty obvious why it was there