I have to admit, when I jerk off and cum all over my hand I sometimes don’t wash it because as soon as it dries up, my hand often feels as if it didn’t came into contact with anything at all. Instead it leaves that fresh feel on the skin of my hands. Therefore when other people shake hands with me, they wouldn’t know that my hand has dried up sperm cells on it. But no worries, as long as the person doesn’t know, all the more power to me!