An ancient phrase used to describe defecation in both fluid and solid. The phrase is most likely from an ancient language spoken by the Egyptians.

The word is still used to some extent, though often only in upper class common tongue.
"Do you need to use the restroom?" "Affirmative, I'm in great need of letting go of neiri cheiri. "
by JuanCarlosAndréSantiago December 4, 2018
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