A girl who looks like she gives really good head; receives her name from the glack sound made when your dick hits the back of her throat.
by EdiUni November 2, 2010
Glamorous knacker drinking. Buying pints, cocktails or a bottle of wine to drink with your well to do friends while wandering around the city. This phenomenon arose in Dublin during the Great Covid Lockdown of 2020
Hey Jennifer, let's go glacker drinking this evening! Kenny's is serving take-away pints and all the lads are going on the glack.
by OnTheGlack December 1, 2020