Top definition
The act of defecating in the upper tank of a toilet after the consumption and digestion of a "Double Down" sandwich from Kentucky Fried Chicken.
Todd demonstrated his contempt for health and hygiene by performing an Upper Double Decker Down.
by urbanschlager April 07, 2010
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Dirty Sanchez Plush

It does not matter how you do it. It's a Fecal Mustache.

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