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1.
A term used by heroin addicts to describe a porta-potty in which better suits heroin addicts for a private place to cook up a shot of dope and shoot up in privacy while on the go!
More so than a private place to take a dump!
Junky: Wheres the best place I can bang my dope in privacy?

Wise Hobo: You can always try the Porta-shooter at the playground!
by Ivan S Tessmer January 24, 2013