A mixture of
hard liquor (usually vodka, sometimes whiskey), mountain dew,
cough syrup, and urine, popular among teenagers in Eastern Europe at parties.
Originally referred to a mixture of vodka and urine, usually made accidentally as the result of the 'brewer' being so drunk that they lose bladder control. Some other drunks found that the mixture didn't taste all that bad, and it was popular with the homeless of
the Soviet Union. Mountain Dew and cough syrup were first added in Poland around 2010, mimicking "Lean" in the United States.