66's on the button.

2/3 nl. I'm effective with 400.

The CO opens to 12, I call on the button with 6d6s, SB calls, BB folds.

The CO was a young kid who was playing a laggy style. He seemed to C bet every time he raised but this is over a short sample. The SB loved to gamble. He had been open raising, cold calling single and 3b raises. He wasn't as loose or agro post. If he missed he just got out of the way. I have a tight image. The CO asked me an orbit ago (3b or fold?) since I had been 3 betting or folding since I had been at the table. Ironically shortly after this hand came up.

(36 in pot) 7c8c3d...It's checked to the CO who bets 15...What should I do? Was my call on the button correct?