I guess its different with me because I am arguably the lightest 3-bettor ever outside of maybe JKrantz at 400/600nl. therefore when I see KK in my hand the idea of folding doesnt even enter my head in the games I play.

that being said maybe if this guy is an uber-nit and his 4betting range is AA- and yea these probably do exist at those limits, then muck em I guess. And I've played with LDonnie and I wouldn't fold KK to him ever preflop so I guess this PAV guy has to be the nittiest nit in the world. Ugh.