This question was closed as off-topic, for reasons I can't understand. It's a question about slang (albeit the OP was a bit confused about the original usage as compared to the slang usage), which seems on-topic for EL&U. (It's not as if we've closed slang questions in the past just for being slang.)
I know at least one user voted to close as general reference, which it's really not. If we follow the close text guideline, which reads
This question is too basic; it can be definitively and permanently answered by a single link to a standard internet reference source designed specifically to find that type of information.
There really is no standard internet reference source for slang; Urban Dictionary comes closest, but people put up inside jokes and the like that it's really not that helpful.
So should this question really have been closed, and why?