an exclamation similar to astonishment, surprise, or being in the state of awe. originated from the terms of whoa, oh my fucking god, what, a, twist (with emphasis on twist at times depending on the level of whoaomfgwhatatwist)
Guy 1:.... So I hooked up with the girl , and of course I was too drunk to realize I was in the wrong club, and needless to say I found out the girl wasn't a girl. It was Chris Crocker.
Guy 2: whoaomfgwhatatwiiiiiist
Guy 1: That's exactly what I told him: whoaomfgwhatatwist
, then I passed out.
Guy 2: damn bro.