He inched his fingers to the little opening between his sister legs, her body was oily and they were in the pool but once his fingers passes the tight together lips his fingers were slick on her wetness.  HE blushed as his fingers danced into her pussy.  "How should I.." taking his fingers out and mimicing what he had seen in porn movies, rubbing the small protruding button at the top gently with two fingers as if he was rapidly petting a fragile animal.<br/><br/>As his sisters fingers caressed the tip waves of pleasure went up his body. "Its a good thing I already jerked off today or I would have already cum," he said "And I was thinking of all of us while I was doing it, is that bad sister" he asked still wrapped against her rubbing her clit.