When the penis goes from erect to flacid in a very sudden fasion. Usually has a slight stinging feeling in the head of the penis during the shrinkage(similar to the feeling of recieving blue balls). Can occur at the sight, smell, touch or sound of something unatrractive.
Dude, she had so much hair in her butt hole that i got the worst Renob of my life.
by MidShaftGash December 08, 2005