Villain is kind of passive, kind of bad. I have 50 hands on him at 40/8. This is the first time he's check-raised anyone. When someone like this wakes up with a check-raise, I usually run for the hills.

PokerStars No-Limit Hold'em, $0.50 BB (6 handed) FTR converter on zerodivide.cx

BB ($33.85)
UTG ($11.15)
MP ($28.50)
Hero ($65.20)
Button ($49.40)
SB ($54.90)

Preflop: Hero is CO with A, K.
1 fold, MP calls $0.50, Hero raises to $2.5, 3 folds, MP calls $2.

Flop: ($5.75) A, 2, 5 (2 players)
MP checks, Hero bets $3, MP raises to $6, Hero folds.

Final Pot: $14.75