Re: I know we never fold KK pre w/ 100bb stack, but what about this on
 

Well well... the very unexpected results, he had AA and I didn't draw out.

Re: I know we never fold KK pre w/ 100bb stack, but what about this on
 

make a note and move on .. its just a cooler and you weren't particularly deep, it happens. (make the note about the 4 bet sizing)

Re: I know we never fold KK pre w/ 100bb stack, but what about this on
 

How about calling and taking it to the flop, rather than giving our hand away to some extent. If he has a hand like QQ or JJ he'll want to bet a safe flop reasonably hard. Then we play for stacks...