1. After you get done masturbating and there is sperm on your hand and body then you go to wash it off and when you thought you got it all off after a while you will see a crusty layer of dried up cum on your stomach or thumb.
2. Crusted up jizz.
3. Dried up layer of sperm after showering.
"I masturbated and then showered and dried off and when I went downstairs to eat dinner a had jizzdue all over my stomach and thumb!"