What a pluperfect a##hole

Solution 1:

The OED's adjectival sense A2b is:

hyperbolically. Utterly perfect; ideal, faultless.

And has citations from 1832 to 1992, from both US and UK sources, the last two from Noel Coward's Diary (1965) and Newsweek:

• It was a perfect, pluperfect, evening; absolutely clear and not a breath of wind.

• While Johnny [Carson] may have been his own best guest, he was also the pluperfect guest.

Sense A3 is:

colloq. As a general intensifier.

With citations from 1889 to 2000, all from the US, the last from Play World:

The pleasure of living fully, including the alternative to unbutton and raise pluperfect hell.

There's also the obsolete sense A2a, with 1802 and 1856 citations from British magazines:

Having or being more than what is needed; superfluous. Obs.