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).
When someone hasn't got laidin a while, their vision is said to become "Poonaramic". A typical symptom of poonaramic vision is when everything they see reminds them of their lack of action.
Dude 1 - "Look at Michael, hes fully gone insane, going for everything and anything"
Dude 2 - "I know man, his lack of action has resulted in Poonaramic Vision"