Simply a variation on the classic MILF
that is well known. This is referring to a "Mother-In-Law-I'd-Like-to-Fuck."
That dress your mother-in-law was wearing at the wedding seriously made her look like a MILILF.
It is a formal declaration issued in the event that you will pwn
someone at a later date and time if you cannot presently do it. A postpwnment is normally declared when you yourself have been pwned, but do not have the time to retaliate.
Yesterday Dave totally pwned me in CS
, but I was too damn tired, so I issued a postpwnment until next week.