pissing the night away 

"Piss" is a term long used in the UK and more recently in Australia for (generally weak) alcoholic beverages. Pissing the night away is an idiom that means drinking alcoholic beverages all night. It has nothing to do with urinating, as one would assume in the United States.

My friends and I spend our weekends pissing the night away.

pissing the night away by FireTater February 28, 2009

pissing the night away 

For one to drinks tons of alcohol and whenever they get done piss the rest of the night

Man Aric is so damn drunk hes just going to be pissing the night away like its no ones business.

pissing the night away by loolur June 21, 2008