Top Definition
A mode of eating popularized by Eric Cartman highlighted by jamming food into the rectum and deficating out of the mouth instead of vice versa. Eric won a $20 bet with his Jew-friend Kyle for proving that introretrogestion is humanly feasible.
Popcorn is one food that would be difficult to eat using introretrogestion.
by Condor September 22, 2006

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The act of inserting foodstuffs into the anal cavity, as means of eating.
Did you know Randy practices introretrogestion now? I saw him get a whole turkey in there!
by Gary Coleman IV June 16, 2008

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One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

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The Urban Dictionary T-Shirt

Soft and offensive. Just like you.

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The Urban Dictionary T-Shirt

Smooth, soft, slim fit American Apparel shirt. Custom printed. 100% fine jersey cotton, except for heather grey (90% cotton).

Buy the t-shirt