A 99 hand

[sean c]

Party 3/6(6 max 6 players). New to the table villian hasn't been out of line during the few orbits i have been there. He has been sucked out on a couple of times and has been berating players and seems a little tilty.

Pre flop: Folds to me in the CO and i open raise 9 [img]/images/graemlins/spade.gif[/img]9 [img]/images/graemlins/club.gif[/img], folds to BB who calls.

Flop(2 players 4.5sb): A [img]/images/graemlins/spade.gif[/img]A [img]/images/graemlins/club.gif[/img]K [img]/images/graemlins/spade.gif[/img]
BB donks [img]/images/graemlins/confused.gif[/img] and i call.

Turn(2 players 3.25bb): 5 [img]/images/graemlins/spade.gif[/img]
BB bets and i call.

River(2 players 5.25bb): 7 [img]/images/graemlins/spade.gif[/img]
BB checks and i check.

Okay his flop donk threw me and i was unsure how to deal with it. I had a hard time believing someone donks an ace here maybe a king or flush draw which i am behind both on the turn. Is this pot just small enough to let this go on the flop? Since i did stay in the hand should i have bet the river? This was one of those hands where i had no clue so i just called down.