1 definition by Shummer
The act of a ejaculating at the precise moment when a man initiates his bowel movement. This is a very difficult task and should be attempted with great caution.
Dan: Hey dude, is it possible to have an orgasm while pooping?
Joe: I don't know, go try.
Dan: Would that be considered shumming?
Joe: Yes.
Joe: I don't know, go try.
Dan: Would that be considered shumming?
Joe: Yes.
by Shummer January 23, 2012