Top Definition
Shortened from: Morbidly Obese Person of America
-Have you seen the latest episode of "The Biggest Loser"?
- Dude, I live in florida. I can just go to Disney and see as many MOPAs as I want.

-How was the flight?
-I had the window seat, the MOPA had the aisle.
-... So, crowded?
by ZombieEnthusiast November 10, 2010
1 more definition
acronym for Morbidly Obese People Annonymous. A word to desbribe average people with the eating habits of an obese person, hence the annonyminity.
'dude, is that youre 4th jumbo hotdog? how many have you eaten!?'

'actually this is my 27th'

'what a mopa'
by medditarasian November 06, 2007

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