To prepare for a night of drinking at bars and clubs by drinking at home first, in order to already have a good buzz going before you get there. Cost effective.
by Blue Dragon May 20, 2005
The pre-drinking before heading out to a bar, or other event where overpriced liquor is the norm. "Pre-flight" enables said users to get liquored up before the event - so as not to spend as much money later on at the bar. Term used mainly by Marines, but other military types as well.
by JoeSchmoeMarine February 06, 2008