Pronounced "in qwoo qwassive"
To commit an act that is simultaneously class and trashy.
Etymologically, its a combination of "classy" and "in" for inversion, originating underneath a bridge in Burlington, Ontario, Canada.
"Oh man, Ted's so inququassive, last Thursday he was railing coke off a stripper's hipbones."
"I was so off last night, i went and drank a fortie and smoked a pack of cigarettes by myself, strumming my guitar, watching the lights 'cross the bay, it was pretty inququassive in a Tom Waits kinda way."
"Dude, that's mad inququassive", in response to someone doing something trashy and classy...