NL CASH ever OK to call this?

[Kassu]

He makes a donk-bet on a weird board and I take it as weakness from a player like him. On the river I can't really see him having anything, but on the other hand I don't think he's that crazy of a player. Did he really hit his eights, sixes, 97 of diamonds or 54? Ever ok to call this? Or maybe I'm just too big of a calling station?

Reads: pretty straightforward tight player. He probably sees me as agressive but solid. I sure had been playing like on.

NL $1/$2 Texas Hold'em - Tuesday, October 16, 18:36:41 GMT 2007
Table Madrid 08 2-max (Real Money)
Seat 1 is the button
Total number of active players : 2
Seat 1: thanks4cash ( $226.60 )
Seat 2: AceDude ( $200.20 )
thanks4cash posts small blind [$1]
AceDude posts big blind [$2]
** Dealing down cards **
Dealt to thanks4cash [ 6[img]/images/graemlins/heart.gif[/img], 4[img]/images/graemlins/heart.gif[/img] ]
thanks4cash raises to [$6]
AceDude calls [$4]
** Dealing Flop ** [ T[img]/images/graemlins/diamond.gif[/img], 2[img]/images/graemlins/heart.gif[/img], 3[img]/images/graemlins/diamond.gif[/img] ]
AceDude bets [$12]
thanks4cash raises to [$36]
AceDude calls [$24]
** Dealing Turn ** [ 6[img]/images/graemlins/spade.gif[/img] ]
AceDude checks
thanks4cash checks
** Dealing River ** [ 8[img]/images/graemlins/spade.gif[/img] ]
AceDude bets [$84]
thanks4cash WTF?