what to do w/99 w/2 overcards?

[cd1680]

Full Tilt Poker
No Limit Holdem Ring game
Blinds: $0.50/$1
5 players

Stack sizes:
UTG: $100
Hero: $100
Button: $93.25
SB: $99
BB: $173.20

Pre-flop: (5 players) Hero is CO with 9s 9h
UTG folds, Hero raises to $3.5, 2 folds, BB calls.

Flop: 2c 6c 8s ($7.5, 2 players)
BB checks, Hero bets $6, BB raises to $18, Hero calls.

Turn: qc ($43.5, 2 players)
BB checks, Hero checks.

River: ad ($43.5, 2 players)
BB bets $40, Hero ????


opponent stats are 13/8/1.63 over 53 hands. my stats are 27/27/22 over 52 hands at this table. i have seen this guy call 2 streets w/bottom pair and gutshot on monotone board with no flush possibility for him then bet pot on river w/just his bottom pair. however, the Q and the A and the flush card that hit made it very hard for me to call this bet. i think i played this hand too passively and thats why im in such a marginal situation. should i have 3bet the flop or bet the turn? the reason i didnt was because he doesnt like to fold (as with his bottom pair and gutshot on monotone board). how well did i play this?

[ikestoys]

the title here is missing the point

[jk3a]

fold the flop

[Check_The_Nuts]

yea flop is a fold especially considering this guys turn/river tendencies.