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When your poop comes out very easily, quickly, and cleanly; so clean you don't even have to wipe. Usually a surprisingly large amount. So efficient that you feel that you are part bionic. It is as if you are a robot and pressed the "eject" button on your waste receptacle.

terminator turd bionic butthole fast feces
-"Wow, that was fast. I thought you had to drop a deuce."

-"Yeah, it was a robot poop."
by I'm a robot February 29, 2012
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