1 definition by Lorin Granger

1. -interjection
A blurted involuntary exclamation of ecstasy and/or confusion that occurs as the result of a sudden, intense and emotionally affecting event.

2. -noun -slang
Refers to the event triggering the interjection, usually of a crude, sexual nature.
The panic attack induced orgasm caused Pete to exclaim, "Piggachowna!"

"Did you really have a piggachowna yesterday?" "I did indeed and I'd rather not talk about it."
by Lorin Granger June 18, 2008
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