Completely confused by villain's line...

[neurotiq]

I'm dealt 9[img]/images/graemlins/club.gif[/img]9[img]/images/graemlins/heart.gif[/img] in MP2. UTG+2 is 34/12/1.75.

UTG+2 limps. I raise. All folds to UTG+2 who pulls the old limp-3bet. I have no idea what this means, and cap (is this a bad idea? I really have no idea how to handle this situation and have no idea what a limp-3bet means). He calls.

Flop is: Q[img]/images/graemlins/club.gif[/img] 7[img]/images/graemlins/club.gif[/img] 6[img]/images/graemlins/heart.gif[/img]

UTG+2 checks to me. I bet. He check-raises now. I call.

Turn: Q[img]/images/graemlins/club.gif[/img] 7[img]/images/graemlins/spade.gif[/img] 6[img]/images/graemlins/heart.gif[/img] Q[img]/images/graemlins/spade.gif[/img]

UTG+2 checks to me again. I'm so completely confused and have no idea how I should be playing this...