State of being very stoned off of marijuana to the point where the noise "GAALLKK" is hilarious. Speaker must yell it and put a heavy emphasis on the "AAALLL" part of it in a loud and "sherman" type voice. Also yet another word for pot.
"Dude that bubble haze+herer+durban poison had us so retarded that Jimmy had us going crazy popping out of his room and screaming "GALLK"!!"
by ERS6 August 23, 2007
Get the Gallkmug.