I checked the flop because everybody had been folding to CB's all night long. Don't have a lot of hands on villian, but it's showing an infinite aggression factor, so I expected him to take a shot on the turn if I checked behind. I didn't expect the push, though...

Poker Stars
No Limit Holdem Ring game
Blinds: $0.10/$0.25
3 players


Stack sizes:
Hero: $40.35
SB: $38.45
BB: $42.35

Pre-flop: (3 players) Hero is Button with
Hero raises to $1, SB calls, BB folds.

Flop: ($2.25, 2 players)
SB checks, Hero checks.

Turn: ($2.25, 2 players)
SB bets $1.5, Hero raises to $4, SB raises all-in $37.45, Hero ?????