aborted hershey launch 

The act of fellating a live log of poo as it is exiting the rectum, then gently pushing it back up the colon with one's tongue.

Jen was surprised when her once-a-day shit-eating session turned into an aborted hershey launch just because Juan enjoyed having shit shoved back up his ass.

aborted hershey launch by Comic Event of the Century June 17, 2008