This guy seemed pretty aggressive, but I hadn't really been paying a whole lot of attention. I figured there was a good chance he was weak since he was raising on the button after a forced post, so I decided to slow-play my aces. What's a good line afer this flop hits?

PokerStars No-Limit Hold'em, $2 BB (5 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver)

SB ($335)
Hero ($185.75)
UTG ($62.70)
MP ($200)
Button ($266.05)

Preflop: Hero is BB with A, A. MP posts a blind of $2.
1 fold, MP (poster) checks, Button raises to $10, 1 fold, Hero calls $8, MP folds.

Flop: ($23) 2, 2, 7 (2 players)
Hero checks, Button bets $18, Hero ?