1 definition by wino624

A word to describe eating something that tastes completely horrible just because it is good for you.
Gwen: What are you drinking?
Steph: A beet, spinach, and spirulina smoothie. It is completely gagtastic but I am going to look hot in my bikini this summer.

I find greek yogurt to be completely gagtastic, but there's so much protein in it I keep choking it down every day.
by wino624 June 14, 2011
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