nasty, horrible, disgusting
urgh, i had to open the window, cuz the car smelt gacky as fuck
מאת mikepacker88 14 באוקטובר, 2007
a nickname for someone that does meth. from the word "gacked"
hey gacky, are you gacked ouy today?
מאת S. 22nd street 18 באוקטובר, 2006