Overplayed on the river?

[Ruddiger]

PokerStars 2/4 Hold'em (6 handed) converter (http://www.selachian.com/tools/bisonconverter/hhconverter.cgi)

Preflop: Hero is UTG with A/images/graemlins/diamond.gif, A/images/graemlins/club.gif.
<font color="CC3333">Hero raises</font>, MP folds, CO calls, Button folds, SB folds, BB folds.

Flop: (5.50 SB) 8/images/graemlins/heart.gif, 8/images/graemlins/spade.gif, 7/images/graemlins/club.gif <font color="blue">(2 players) </font>
<font color="CC3333">Hero bets</font>, CO calls.

Turn: (3.75 BB) K/images/graemlins/heart.gif <font color="blue">(2 players) </font>
<font color="CC3333">Hero bets</font>, <font color="CC3333">CO raises</font>, <font color="CC3333">Hero 3-bets</font>, <font color="CC3333">CO caps</font>, Hero calls.

River: (11.75 BB) 6/images/graemlins/spade.gif <font color="blue">(2 players) </font>
Hero checks, <font color="CC3333">CO bets</font>, <font color="CC3333">Hero raises</font>, CO calls.

Final Pot: 15.75 BB

Results in white below: <font color="white">
Hero shows Ad Ac (two pair, aces and eights).
CO shows Js 8d (three of a kind, eights).
Outcome: CO wins 15.75 BB. </font>

[Nate tha' Great]

It really depends on just how loose his cold calling standards are before the flop. If he plays like a total fish, you should be more inclined to give him credit for trips, since this is exactly how a fishy player plays trips.