Top Definition
When you really have to go, so you take a crap in a can, bottle, cup, etc.
There's no gas station for miles! I'll have to try can-shitting.
by fuckanasspls April 09, 2015
1 more definition
To defecate in a can or other container not normally used as a toilet.
Stan: Becky, all this Tupperware is full of shit. It's nasty!
Becky: Don't you talk about my canshitting, Stan!
by canshitter February 04, 2010

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