2pr vs. river c/r

[king_of_drafts]

Poker Stars - No Limit Hold'em Cash Game - $10/$20 Blinds - 5 Players - (LegoPoker HH Converter)

SB: $5,022.00
BB: $2,353.00
UTG: $1,316.95
CO: $2,670.00
Hero (BTN): $2,481.00

Preflop: Hero is dealt T[img]/images/graemlins/spade.gif[/img] 9[img]/images/graemlins/spade.gif[/img] (5 Players)
2 folds, <font color="red">Hero raises to $60.00</font>, SB calls $50.00, BB folds

Flop: ($140) Q[img]/images/graemlins/spade.gif[/img] 9[img]/images/graemlins/diamond.gif[/img] 5[img]/images/graemlins/heart.gif[/img] (2 Players)
SB checks, Hero checks

Turn: ($140) T[img]/images/graemlins/club.gif[/img] (2 Players)
SB checks, <font color="red">Hero bets $121.00</font>, SB calls $121.00

River: ($382) 7[img]/images/graemlins/spade.gif[/img] (2 Players)
SB checks, <font color="red">Hero bets $343.00</font>, <font color="red">SB raises to $1,100.00</font>

Villain is vapezilla, taggy, spewy when tilting, but overall decent. He is running hotter than the sun when this happened, particularly vs. me. I've seen him win about $6k in the past five or ten minutes...dunno if this makes him more or less likely to bluff, but I am guessing less likely, since he has been active and isn't stuck so probably won't make any super crazy moves. So, wtf?