Urinaltard 

A guy that violates the unwritten rule of proper urinal protocol, by selecting the middle urinal, when having the choice of three urinals. Thus eliminating the possibility of a buffer urinal for the next guy. A retarded urinal user.

Bill: Dude, I just tried to take a leak and when I entered the restroom, this douche was using the middle urinal. There were vacant urinals on each side, but talk about awkward!

Ted: Yeah, what a urinaltard!!

Urinaltard by Titleist2002 July 30, 2013

Urinalvading 

The act of urinating in a urinal directly next to another male, not allowing a buffer between the other male, while there are ample urinals available.

I was enjoying my piss when the stream ceased because of some asshole urinalvading.

Urinalvading by Ritardo March 9, 2015