For background, here's a previous hand with the villian who raised the river - the textbook example of how NOT to play KK on an A-high flop -

Poker Stars
Limit Holdem Ring game
Limit: $0.50/$1
6 players


Pre-flop: (6 players) Hero is UTG with
Hero raises, 2 folds, Button 3-bets, SB folds, BB calls, Hero calls.

Flop: (9.5SB, 3 players)
BB checks, Hero checks, Button bets, BB calls, Hero raises, Button calls, BB calls.

Turn: (7.75BB, 3 players)
BB checks, Hero bets, Button calls, BB calls.

River: (10.75BB, 3 players)
BB checks, Hero bets, Button calls, BB raises, Hero calls, Button calls.

Results:
Final pot: 16.75BB
BB showed Kc Ks
Hero showed Kd As


Now for the hand in question - when the board pairs and it's suddenly two bets to me, one of them probably has a boat, right?

Poker Stars
Limit Holdem Ring game
Limit: $0.50/$1
4 players


Pre-flop: (4 players) Hero is UTG with
Hero raises, Button folds, SB calls, BB 3-bets, Hero caps, SB calls, BB calls.

Flop: (12SB, 3 players)
SB bets, BB calls, Hero calls.

Turn: (7.5BB, 3 players)
SB bets, BB calls, Hero raises, SB calls, BB calls.

River: (13.5BB, 3 players)
SB bets, BB raises, Hero ???? (other than cursing madly)

Yeah, that's a bitch. I think cursing madly is your best option. Find something to punch as well. Only way I can think that your not beaten is if BB knows small blind is a donk and is sure he has him beat, but wants to see if he can get you to fold. Not going too many that shrewd at this level though. I'm thinking BB has Jacks or Tens and got scared on Turn. Of coures he could have Quads also but that's less likely.

First hand- Ya know, i would be muuuch more inclined to fold the first hand than the second one...oh my GOD would i have been PIST PIST PIST for folding that first hand too...Thing is though he raised the entire field, on the river where he has no reason at all to think that BOTH of you would fold with all those bets in there, so i maaay have folded. If the guy was a godawful mizor then id call of course, he could always have had like ace-rag and been worried about his kicker, but now figure that hes at LEAST choppin it (because WHY IN THE WORLD YOU HAVE A BIGGER KICKER THAN A JACK?!?) First hand is a marginal one imho, though with all those bets id probly just say fuggit and call, cuz hed hafta be a real mizor to ACTUALLY have a 3 there, and if he had a set or AJ youd have heard from him before id say- but on the other hand, its hard to imagine he put in that river field raise when his hand couldnt even beat TPTK...so this hand, i think is marginal.

edit- WHOOPS i misread this hand in my first response..DAMMIT i always do that. response to come.