The naughty left hand

Sarah looked at him quizically. "Why the hell would I do that?" Pete chuckled as he stared at her chest. Sarah looked down and gasped.  Even while she protested against doing something like that in public, her hand, without her knowing, had crept up and was playing with her left nipple. Using her right hand, she slapped her left hand away and stared open mouthed at the man.