While completing the task of masturbation, one forgets to chose a device to clean up with such as a towel, sock, or white-tee. The person then wipes his jizz covered hands on his shirt, visibly leaving a stain. The next part is crucial. The jerker must wear the shirt in public allowing bystanders to observe.
Hey Chris, did you spill clam chowder on your shirt or did you pull a bean earlier.