1. The gastro-intestinal pain that sometimes ensues when one consumes too many gummis.

2. The fat, wobbly abdomen that sometimes ensues when one consumes too many gummis.
1. "I'm a mad gummi fan. I always have gummis in my trailer. But you can't eat too many because then you get gummi tummy, and that's no good. I can't believe I'm saying this." - Jensen Ackles

2. "Look at that motherfucking gummi tummy. I swear I'm gonna get a fat fetish watching this show."
by E. K June 10, 2008
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A stomach ache brought on by the consumption of large ammounts of gummy worms, gummy bears, and/or other gummies.
Gummy tummy has a distinctive feeling, unlike that of any other food related stomach ache.
Mark ate a whole tub of gummy worms. Dude had severe gummy tummy after that.
by jewleek April 9, 2010
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Due to excessive body hair, gummy tummy was the bane of Jer-Bear's alternate lifestyle.
by Trent Schoneweis March 4, 2009
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