Crappy pair in unraised pot facing big river bet

[fees]

This guy is definitly a weak player.. i didnt have the stats on him but hes a 26/5 with an AF less than one, but its a very small sample. There is one hand of history...

POKERSTARS GAME #11114514859: HOLD'EM NO LIMIT ($1/$2) - 2007/07/24 - 17:46:30 (ET)
Table 'Hersilia II' 6-max Seat #2 is the button
Seat 1: Marl0 ($218.25 in chips)
Seat 2: Mr.Zacard ($250.40 in chips)
Seat 3: Owen_Lift ($234.10 in chips)
Seat 4: franco162 ($191.90 in chips)
Seat 5: Pazzarotti ($372.20 in chips)
Seat 6: winnahr ($263.70 in chips)
Owen_Lift: posts small blind $1
franco162: posts big blind $2
*** HOLE CARDS ***
Dealt to Marl0 [8s 9c]
Pazzarotti: calls $2
winnahr: raises $6 to $8
Marl0: folds
Mr.Zacard: folds
Owen_Lift: folds
franco162: folds
Pazzarotti: calls $6
*** FLOP *** [6d Kd Ac]
Pazzarotti: checks
winnahr: checks
*** TURN *** [6d Kd Ac] [5c]
Pazzarotti: bets $4
winnahr: raises $14 to $18
Pazzarotti: calls $14
*** RIVER *** [6d Kd Ac 5c] [Th]
Pazzarotti: checks
winnahr: bets $18
Pazzarotti: raises $30 to $48
winnahr said, "A/10 would be about right for me today"
winnahr: calls $30
*** SHOW DOWN ***
Pazzarotti: shows [5s 5d] (three of a kind, Fives)
winnahr: mucks hand
Pazzarotti collected $148 from pot
*** SUMMARY ***
Total pot $151 | Rake $3
Board [6d Kd Ac 5c Th]
Seat 1: Marl0 folded before Flop (didn't bet)
Seat 2: Mr.Zacard (button) folded before Flop (didn't bet)
Seat 3: Owen_Lift (small blind) folded before Flop
Seat 4: franco162 (big blind) folded before Flop
Seat 5: Pazzarotti showed [5s 5d] and won ($148) with three of a kind, Fives
Seat 6: winnahr mucked [As Js]

So what are your thoughts on

PokerStars No-Limit Hold'em, $2 BB (6 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

saw flop|<font color="#C00000">saw showdown</font>

<font color="#C00000">Hero ($218.25)</font>
UTG ($250.40)
MP ($233.10)
CO ($188.90)
<font color="#C00000">Button ($475.20)</font>
SB ($158.70)

Preflop: Hero is BB with 6[img]/images/graemlins/club.gif[/img], 9[img]/images/graemlins/spade.gif[/img].
<font color="#666666">3 folds</font>, Button calls $2, SB completes, Hero checks.

Flop: ($6) 5[img]/images/graemlins/spade.gif[/img], 7[img]/images/graemlins/heart.gif[/img], K[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(3 players)</font>
SB checks, Hero checks, Button checks.

Turn: ($6) 6[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(3 players)</font>
SB checks, <font color="#CC3333">Hero bets $6</font>, Button calls $6, SB folds.

River: ($18) Q[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
Hero checks, <font color="#CC3333">Button bets $18</font>

i have some thoughts on this hand ill post later

[kaz2107]

i just fold unless i see really good evidence that he is a river bluff maniac. from my experience small pots when some one randomaly pots river means he has a big hand

[NoahSD]

Really easy fold.

[SABR42]

I actually don't hate a call here. Do some hand-reading.

He didn't bet the flop, so he probably doesn't have top pair.

He also isn't betting a 7 or Q so strongly on the river (if at all). Call and see his T8o.

Occasionally you will run into a slowplayed monster, but this will be 8-x or 4-x enough of the time.