A species of botfly that is attracted to the scent of alcohol. Its life cycle is similar to the botfly, however, the barfly lays its egg on the skin of unconscious drunken patrons in bars and clubs. Once the maggot is hatched, it bores into the skin of the victim and develop over the course of 6 weeks while feeding on the victims flesh. It then pupates and develop into an adult in another 2 weeks, the adult then fly away. The bar fly has been known to excerbate the effects of a hangover
"Dude! Shit man, a barfly must have laid an egg on you while you were passed out! There's a maggot crawling out of your arm!"
by Peezee-Ark October 05, 2003
Getting so fucked up on drugs and/or booze, that all you can do the following day is to go to a local pub and get hammered
by Gerry November 17, 2004
by cr0nky October 16, 2009