Top definition
Cowboy beer is beer that has been through at least one set of kidneys. A cup of beer piss, to be blunt. Thrifty cowpokes have long known that one can fill up their mug on the cheap from an unflushed toilet or urinal in a beer-sloshed country/western bar. Odds are good that drinking this "cowboy beer" will make the drinker tipsy. Studies say that alcohol potency is increased when passed through a set of kidneys, so grab a mug, buddy!
Trey left his wallet at home, so he drank cowboy beer all night at the honky bar, listening to 'Achy Breaky Heart' on the jukebox.
by pepevision January 18, 2007
Happy St. Patties Day!