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The act of defecating into a bag. Then placing the bag in a discrete location, as to cause the general vicinity to permeate with fecal-matter odor. Preferable in a location that it will not be easily found.
Guy 1: Lets go poopenheimer the sorority houses!

Guy 2: Yeah, they'll never find it.
by Webster278 April 01, 2009
Term used when venting your anger. Also an dorogatory term used as a euthamism for stronger language, usually aimed at the younger generation
Oh Poopenheimer!
You little poopenheimer!
by Joe Tierney February 07, 2008