Villain was UTG+1 in the other hand I posted - not great, but not a complete fish, either. I checked the turn because I really don't want to play for stacks on that board, and then he pretty much insta-fired the PSB...

$0.5/$1 No Limit Holdem
4 players
Converted at

Stacks:
CO ($154.55)
BTN ($167.85)
Hero ($245.55)
BB ($45.50)

Pre-flop: ($1.5, 4 players) Hero is SB [Ah]
CO calls $1, 1 fold, Hero raises to $6, 1 fold, CO calls $5

Flop: [8d][9c] ($13, 2 players)
Hero bets $13, CO calls $13

Turn: ($39, 2 players)
Hero checks, CO bets $39, Hero ????

I tend to think this is a fold. These seem to be 2pr hands that want to take the lead and not let you check behind a draw.