A obese vegetarian. One who has replaced meat in there diet with cookies, cake, ice cream and other junk food.

Self righteous and rude, condemns meat eaters. and is usually on assisted breathing machine.
Did you see the Megatarian eat all the cheese doodles?
by Lord evil March 22, 2013
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A school where you learn to shoot wild T-Rexes.
Person 1: what kind of school do you go to?
Person 2: a megatarian school
Person 1: what's that?
Person 2: a school where you learn to shoot wild T-Rexes
Person 1: oh.
by CaptainRavioli198 July 24, 2023
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Offsetting ones carbon footprint from flying by abstaining from meat consumption prior to a flight (one week for short-haul, 2week for long-haul).
I'm practicing megatarianism this week before my flight to Hawaii.
by Moruzzi May 7, 2018
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