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).

A phrase to describe someone who is cognitively degenerating. Synonym of "going off the deep end". Can have varying degrees of severity.

Reference to the song "Hey You" by Pink Floyd. The line "and the worms ate into his brain" makes no sense in an otherwise linear and literal narration throughout the lyrics.

(noun, verb)Accidental, explosive diarrhea; usually associated with children, traveling, or food poisoning.

When you do a right plopper and it splashes up and obliterate the bog roll.

The water that splashes on your butt when a poop falls into the toilet.

The wave of shit that will end up all over the male crotchal area when pulling out too quickly after anal sex.

Combination of "poo" and "tsunami"... as in a giant wave of poo.