Top definition
When one is, through possible over-indulgence of various substances, or by simply being a master in the art of ass-tappery, unable to cum despite trying incessantly.

One of the two different categories of whiskey dick, one a dysfunctional penis, the other, and overly functional dick.
"Dude she thinks I'm a god of the dick, I was uncumable"
by Nate Froggy Frogg September 23, 2011
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