nasty, horrible, disgusting
urgh, i had to open the window, cuz the car smelt gacky as fuck
ayon kay mikepacker88 ika-14 ng Oktubre, 2007
something that makes you gack, often yucky
the food was gacky.
ayon kay Pookett ika-18 ng Mayo, 2007
a nickname for someone that does meth. from the word "gacked"
hey gacky, are you gacked ouy today?
ayon kay S. 22nd street ika-18 ng Oktubre, 2006