1 definition by SmellyFishMan
A term used to describe the feeling you get after smoking marijuana and can also be used to refer to the ganja itself.
"My friends and i just smoked a fat blunt and we're pretty Gwan."
"Hey man you got any Gwan?"
"GWAN GWAN!"
"Hey man you got any Gwan?"
"GWAN GWAN!"
by SmellyFishMan July 5, 2009