top trips on low board

[Bump_Bailey]

Full Tilt Poker $1/$2 Pot Limit Omaha Hi - 6 players
Hand Converter Tool from DeucesCracked.com

BB: $215.95
UTG: $78.00
MP: $175.00
CO: $191.00
Button: $651.95
SB: $286.80

Preflop: Hero is CO with 6[img]/images/graemlins/spade.gif[/img], K[img]/images/graemlins/diamond.gif[/img], J[img]/images/graemlins/diamond.gif[/img], 7[img]/images/graemlins/spade.gif[/img]
UTG folds, MP calls $2, <font color="#FF0000">Hero raises to $9</font>, Button folds, SB folds, BB calls $7, MP calls $7.

Flop: ($28.00) 2[img]/images/graemlins/spade.gif[/img], 6[img]/images/graemlins/heart.gif[/img], 4[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(3 players)</font>
BB checks, MP checks, Hero checks.

Turn: ($28.00) 6[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(3 players)</font>
BB checks, <font color="#FF0000">MP bets $28</font>, Hero calls $28, BB folds.

River: ($84.00) 3[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#FF0000">MP bets $42</font>, Hero ??

Villain seems laggy over small sample. Easy river call?