Lisa stopped feasting on her younger sister and got up, sitting beside her mother, naked, hands crossed in her lap.....she turned to watch Claire and after a while the temptation grew too great.....she began masturbating, slipping 2 fingers inside her own pussy but stopped just short of climax....she wasn't sure if their mom wanted her to cum.  As a matter of fact, neither girls knew exactly what their mother had in mind...it was confusing enough that they began exploring each other practically by accident, and when their mother joined in it made matters even more confusing.<br/><br/>Finally Lisa slipped closer to their mother and as Claire continued french kissing Cassie, she reached from behind to cup their mother's tits in her hands and began fondling them.....