What is Ninja Dump?
1.
A bowel movement that is stealthy, silent, and quick, but results in total destruction. The defecation community's equivalent of a Silent But Deadly fart.
Ron: "Dude, I Just took a Ninja Dump! Stay out of the bathroom!"
James: "But you were only gone for a minute, and I didn't even know you were in the bathroom!"
Ron: "Precisely!"
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Slang Name, no offence to any dude who might actually have this name -- I know of no Jack Armstrong. A dude who Jacks off so much that ..