hershey sack
when you tuck your penis and balls in while taking a shit and the shit is so big that it touches the tip of your ballsack, leaving a nice brown present for you to clean up.
Guy- Ah man I took the biggest shit yesterday and it gave me a hershey sack!
Other Guy- Damn dude that happens to me all the time.
Other Guy- Damn dude that happens to me all the time.