super easy fold given that he definitly has KK+.
Its not a very likely situation though. A far more likely situation is a nit who probably 3 bets more than AA/KK 3 betting to say 12bb and then 5bet shoving when he almost certainly has KK+. At this point we are getting massive pot odds and we still arent 100% sure he has KK+ so it usually becomes a call.
