Full Tilt Poker
Pot Limit Omaha Ring game
Blinds: $0.10/$0.25
6 players
Converter

Stack sizes:
UTG: $25.50
UTG+1: $24.35
CO: $35.90
Hero: $28.10
SB: $14.95
BB: $28.60

Pre-flop: (6 players) Hero is Button with 2 K K 6
UTG folds, UTG+1 raises to $0.55, CO folds, Hero calls, SB calls, BB calls.

Flop: 5 3 K ($2.2, 4 players)
SB checks, BB checks, UTG+1 checks, Hero bets $2.2, SB folds, BB calls, UTG+1 folds.

Turn: T ($6.6, 2 players)
BB checks, Hero bets $6.6, BB calls.

River: 8 ($19.8, 2 players)
BB is all-in $19.25, el oh fkin el...

Can I call?

would BB raise nut flush draw on that flop? Or would he raise pre flop with A suited ? Maybe he has busted straight draw(might push flop with low straight draw)?!?! Dunno...
I'd prob fold(assuming he caught the nut flush) and wait for a better time to get your money in...sucks...

this is tough, he's either got the nut flush or nothing, assuming that he's a competent player...it really depends, as killrus said, on how aggressive this guy has been...will he take a stab on the flop if he flops an OESD or flush draw? if so, then calling is probably in order, since you would imagine he would either lead or c/r with the nut flush draw in that case...if not, then i think folding becomes the better option

without a read, i think there are better spots to put your money in, there aren't too many people going around making random river bluffs at this level

To be fair (and I'm just looking at his stats now) villain shows 85/10/2 with 75 hands. That makes it an insta call I think, but even an aggrodonk can back in to a nut flush now and again.