When you're taking a shit in a public restroom and the size, mass, or shape of the shit is such that is causes an updward splash that reaches the genital or anal area.

bidet
A small low basin with taps, on which a person sits to wash their genital and anal areas.
Dan was using the restroom at Dodgers Stadium, and he dropped an ass bomb so large that it was like he was using a poor man's bidet.
by D. Jackson and M. Ward September 14, 2005
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This is the term for what happens when someone uses a freshly cleaned Porto Potty to have themself a BM and the turd hits the blue water and splashes up on their nether parts.
The best way to avoid the Poor Man’s Bidet is to unwrap a new roll of TP and carefully place the wrapping on the surface of the blue water like a little landing pad. Then bombs away!
by Miquelito6233 March 6, 2023
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When you poop and it plops into the water and splashes your bottom.
by kiefferteefer March 20, 2023
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When a person is defecating and a large splash of water caused by their poop enters the butthole at the perfect time, coincidentally cleaning it.
Thought it was going to be a messy one, but the poor man’s bidet cleaned me right up!
by poopprodigies May 23, 2023
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