Weiner Poopy Share definition Flag Weiner poopy refers to anal sex and or sex of any kind, also it refers to a female specimen shitting on a couch or floor after anal sex. Nate: Hey i was doing your mom last night and she weiner poopy-ed all over the floorDerek: Fuck you Weiner Poopy by Ndehamer January 12, 2010 Get the Weiner Poopy mug.