A sawed-off shotgun, retrofitted with a handle at the stock. Note: the gun must be a 12 gage pump to be an official pistol grip pump. Originated in Detroit on the south side alleys.
Riding in J's 64 Impala, I held the pistol grip pump on my lap at all times, waiting for suckas to play with my shit.
by Slippy Steve February 15, 2005
Get the pistol grip pumpmug. the act of anally fisting a mans ass while jacking him off. as if you are shooting a pistol grip pum shotgun
by victhespic July 17, 2011
Get the pistol grip pumpmug.