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The act of defecating in the soap compartment of a floor cleaning machine. This causes anal excrement to be sprayed on the floor, as a substitute to the regular soap, when the floor machine is in use.
Anthony: "Did you see the floors? They are brown and smelly!"

Drew: "Yeah, I think someone used a Reverse Floor Machine on them, I would know."
by 50K All Day July 15, 2018
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