Villain is unknown in this hand. As you all know I'm trying to break my nitty ways, but I'm trying not to spew. I put this guy on precisely 67 or 5 with a lower kicker. I didn't think a boat plays this fast. Standard? I usually get weak/tight and fold in this spot.

Party Poker No-Limit Hold'em, $ Hero (6 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver)

SB ($9.05)
Hero ($51.25)
UTG ($49.25)
MP ($21.30)
CO ($110.22)
Button ($113.10)

Preflop: Hero is BB with 5, A. SB posts a blind of $0.25.
1 fold, MP calls $0.50, CO calls $0.50, 1 fold, SB (poster) completes, Hero checks.

Flop: ($2) 8, 4, 5 (4 players)
SB checks, Hero bets $1.99, MP calls $1.99, CO calls $1.99, SB folds.

Turn: ($7.97) 5 (3 players)
Hero bets $5.55, MP folds, CO raises to $36.1, Hero calls $43.21 (All-In), CO calls $12.66.