NIW/niw - meaning "No Idea When"/"No indication when"/"Not Indicative When" ; it can also be used with the other abverbs: where, who and why, with the following changes respectively: niwR, niwH niwY.
Although it's mostly used with when
A: Niw dude, she left me hanging
B: Cool story, bro!
6👍 1👎