SB is an unknown who I have very few hands on. He's done nothing of interest prior to this. BB is also pretty unknown but over 20 hands his VPIP is 60 and his PFR is zero, so I am thinking "fish"... of some sort or other.

Full Tilt No-Limit Hold'em, $0.50 BB (6 handed) Full-Tilt Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver)

Hero ($58.90)
SB ($49)
BB ($20)
UTG ($54.20)
MP ($50)
CO ($18.20)

Preflop: Hero is Button with :Kd: :Jc:.
2 folds, Hero raises to $1.5, SB calls $1.25, BB calls $1.

Flop: ($4.50) :Jc: :Kh: (4 players)
SB checks, BB checks, Hero bets $4, SB raises to $11, BB raises to $18, [color=#CC3333]Hero...