What would you do? #159 - Facing a 2/3 pot river bet holding overpair

So not to get a reputation for playing weak-tight, I don't always fold my KK. 

Full Tilt Poker $0.25/$0.50 No Limit Hold'em - 9 players
The Official DeucesCracked.com Hand History Converter

MP2: $46.40 - 22/0 / NA steal / 0% 3bet / 1.0 AF / 10 hands
CO: $68.15
BTN: $17.50
SB: $15.50
Hero (BB): $51.50 - I'm a 40/30 / 100% steal / 0% 3bet / .5 AF / 10 hands at this table
UTG: $50.00
UTG+1: $50.00
UTG+2: $65.15
MP1: $55.70

Pre Flop: ($0.75) Hero is BB with Kd Kh
4 folds, MP2 calls $0.50, 3 folds, Hero raises to $2.50, MP2 calls $2
The table is new, and I've shown to be a bit aggro PF in the early going...  good opportunity for another raise.

Flop: ($5.25) Th Js 8s (2 players)
Hero bets $3.75, MP2 calls $3.75
Very draw heavy board.

Turn: ($12.75) Jd (2 players)
Hero bets $7, MP2 calls $7
If he has JT, Jx, GG me...

River: ($26.75) 5s (2 players)
Hero checks, MP2 bets $18.30, Hero ???


Click to see results

Hero calls $18.30
I love the check the river, because a lot of times, villains are going to realize that the only way they win the hand is by betting and pushing me off the best hand.  I'm not going anywhere.

Additionally, the only hands that are raising a river bet are hands that beat me. Therefore, I get the best of both worlds; I don't put out additional money on the river, yet have the option of calling through by the induced bluff... rather than put money at risk by leading the river and either get raised and have to fold or illicit a fold from my opponent, netting me $0 at the river.

Final Pot: $63.35
MP2 shows Ks Qd (a pair of Jacks)
Hero shows Kd Kh (two pair, Kings and Jacks)
Hero wins $60.35
(Rake: $3.00)