This phrase has absolutely nothing to do with getting drunk.
More accurately, 'pissing down the barrel', a phrase used by the British Army of the Napoleonic Era. Referring to the battlefield expedient of urinating down the barrel of a musket to clear black powder residue, when you didn't have the time or opportunity to clean it properly with cleanwater. The phrase became a way of referring to any action taken as an improvised expedient; then becoming a synonym for emergency or last-chance measures; and finally used to refer to any action that seems hopeless or with little chance of success.
"Dig in and hold them as long as you can."
"We may as well be pissing down a barrel."
"The approach will not be easy. You are required to manoeuvre straight down this trench and skim the surface to this point. The target area is only two meters wide. It's a small thermal exhaust port, right below the main port. The shaft leads directly to the reactor system. A precise hitwill start a chain reaction which should destroy the station. Only a precise hit will set up a chain reaction. The shaft is ray-shielded, so you'll have to use proton torpedoes."
"That's impossible, even for a computer. It's like trying to piss down a barrel!"
Engaging in a frustrating pursuit that consumes more effort that it is worth. The idea is that "pissing upside down" is an ineffective way to do something very simple, and likely results in getting wet.
"I just wanted to get a quart of oil out of the garage but I bumped the boxes of scrapbooking supplies, which knocked over a bottle of brake fluid that split open and is getting everywhere. Now I'm pissing upside down."
Precedes or follows either a gratuitously disrespectful or honest remark, originated in New York City. Used in similar fashion to "no offense" or "to be honest," interchangeably.
Ya mans is wild buns, respectfully. Respectfully he's washed.
After school, The Modells on Jamaica Ave was active. Respectfully.
Adjective. Used to describe persons who have adjusted or altered their lifestyle for environmental reasons. Crunchy persons tend to be politically strongly left-leaning and may be additionally but not exclusively categorized as vegetarians, vegans, eco-tarians, conservationists, environmentalists, neo-hippies, tree huggers, nature enthusiasts, etc.
Also used to describe establishments where alternative foods and products are sold, i.e. natural food stores.