I'm with Patty & Chop. Don't really know if I want to isolate what is conceivably a higher pair than mine to begin with, nevermind the coinflip with 2 overcards. I love a set mine as much as, well, even more than the next guy. But with a 5x+ BB raise folded to me, don't think I like my chances - especially with the big-stack BB left to act. The only hint that the BB stacked up w/AA and KK works in your favor, as he didn't get there from bluffing
or loose calls, so that bodes well he might fold to 'normal junk'. Still, 66 is worrisome. If it were me in that crippled stack, I call. You are just below average, save it.