What exactly was "unreportable" from this pool report from the VP's trip?

This was largely a repeat of the speech delivered the day before in Tokyo. However, the vice president made something clear this day that had been unanswered the day before – when he had departed from a prepared text in Tokyo that had read Americans "do not'' accept a policy of retreat and instead said that Americans "will not'' accept a policy of retreat. Your pool's queries about the meaning of this departure in tenses went unanswered last night in what started as a background briefing with an administration official and lapsed into something else that is, well, unreportable.

Well, tell us! Wonkette readers are giving their best guesses here and one FishbowlDC tipster is just dying to know...

Most. Intriguing. Pool. Quote. EVER! (from this morning/VPOTUS coverage): "Your pool's queries about the meaning of this departure in tenses went unanswered last night in what started as a background briefing with an administration official and lapsed into something else that is, well, unreportable." Unreportable? That is too rich to leave sitting there. Vaguely dirty, too... What did that mean? GET ON IT, Fishbowl!