Happens often. A few months ago, I was on vacation in NYC and went to visit family in CT, where my mother was on vacation to see some relatives. Before I had left to take the train, I had rubbed out a load in my hotel room and hit my face and the headboard of the bed, along with the pillow, but I thought I had cleaned it all up. Well, not every bit. I had missed a blob that had hit the frame my glasses, which have dark gray frames. When I was on the train, I scrathed an itch on my face and readjusted my glasses and I felt something on them but couldn't figure out what was dried on them. I didn't have any water to wash them off, so I was trying to flick it off the best I can. When my mom and one of my cousins picked me up at the train station, she said that I had something all over my glasses (her word was schmutz (good Yiddish word), and she was trying to wipe it off, then it hit me what it was and when we got to my uncle's house, I washed them off as soon as I got inside. Talk about being embarrassed! How many people did I interact with having a blob of dried cum on my glasses? And my mother trying to wipe it off. I wanted to die and to laugh at the same time.