3/6 - dumb hand, small pot gone big

[griffey24]

-villain in this hand is sup foolio
-he's pretty aggro, and plays mostly 5/10 I'm pretty sure
-villain runs 27/21/2.6 over bigish sample
-dynamic this session is that he's been 3betting me on a few tables, and I've folded to all of them
-timing of both checks were around 3 seconds
-river bet, 4 seconds, $10 into 55ish
-if people are bluffing here, do they really bluff this big or would they just c/r to like $80 or something? I was prepared to call a c/r <90ish pretty quickly given my sizing but not sure now


$3/$6 Ante $1.20 No Limit Holdem
6 Players
Hand Conversion Powered by weaktight.com

Stacks:
Hero (UTG) ($600)
UTG+1 ($676.80)
CO ($619.80)
BTN ($626.20)
SB ($1,020.40)
BB ($1,605.40)

Pre-Flop: ($16.20, 6 players) Hero is UTG
Hero raises to $21, 3 folds, SB calls $18, 1 fold

Flop: ($55.20, 2 players)
SB checks, Hero checks

Turn: ($55.20, 2 players)
SB checks, Hero checks

River: ($55.20, 2 players)
SB checks, Hero bets $10, SB raises to $150, Hero tanks