Welcome to the world of Maximum Peformance (or MAP) testing. 22 municipalities and associations came together across the US and Canada to form a consortium to develop a 'standard' test (and test media) and test toilets to determine who flushes feces the fullest.

https://map-testing.com/background/

(And really thorough history! https://map-testing.com/wp-content/uploads/2025/12/Backgroun...)

Apparently, a "MaP Premium" toilet is going to be the golden shitter.