poo-nah-mee NOUN
1. an unusually large wave or splash produced in a toilet bowl by a large or well-placed excrement (poo).
2. an exceptionally large, oderiferous or much-anticipated bowel movement.
Origin:
2011-2012; <
Brinston, Ontario, Canada. Based on Japanese word "tsunami", equivalent to
tsu harbor (earlier tu ) +
nami wave < poo (poo) + nami (wave).