Wow this is kind of wierd. I'd be thinking AT, 66 or 22 (surely TT raises preflop?). Maybe somebody decided to get tricky with an overpair. I'd bet either check the turn or bet $20. Unless someone pushes, I'm going to see it to a showdown.

I would have bet more on the flop. As is, it looks like an AK continuation bet and maybe they decided to stick around with overcards. IMO big pairs, OOP are not situations to get too fancy with. You need to find out where you are. I make pot sized bets, until somebody plays back at me or something scary like top card pairs the turn or river. If the villains fold, I'm just happy to take it down. If they both call a PSB on the flop, I could check/fold the turn.