100NL - JJ has me confused PF

[NNH]

Button is on tilt this hand, so I'm pretty sure he's not very strong. SB is fairly new to the table, so no reads. I've been playing a bit on the loose side, not too much though.

Party Poker No-Limit Hold'em, $ Hero (6 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

Button ($60.20)
SB ($109.15)
Hero ($130.65)
UTG ($38.70)
MP ($143.25)
CO ($26.90)

Preflop: Hero is BB with J[img]/images/graemlins/heart.gif[/img], J[img]/images/graemlins/club.gif[/img]. SB posts a blind of $0.50.
<font color="#666666">2 folds</font>, CO calls $1, <font color="#CC3333">Button raises to $4</font>, SB (poster) calls $3.50, <font color="#CC3333">Hero raises to $15</font>, CO folds, Button calls $12, <font color="#CC3333">SB raises to $47.5</font>, Hero?

I think this is an easy fold. Comments.
Also any comments on PF action as well.