look up any word, like rimming:
 
1.
The one who chose the bottle's curves over a woman's curves and never reproduced for whatever reason.
The family portrait never included drunk Uncle Fester because he was too drunk to stand for the photo.
by john2 November 16, 2007
 
2.
a person, not necessarily a family member of any kind, who, when things around them are generally well will be ecstatic about any and everything, but similarly will turn dour/morose/angry/violent the moment things go slightly awry.
Dude1: Barry, is such a fucking drunk uncle. I can't stand it when he flips out like that over nothing.
Dude2: Uh... Barry isn't your uncle, and I'm pretty sure he hasn't been drunk the last two times we saw him.
Dude1: ...You're an idiot...
by T-Dubbs7488 October 23, 2007