Sarah felt the faltering in his coordination and the ripple of his stomach as he seemed to stumble at her continuous stroking.  A self satisfied smile appeared on her face.  It was fun knowing she could get to him as much as he was affecting her.<br/><br/>She whimpered when his hand left her breast, even though his mouth hadn’t moved a millimetre, but it soon turned into a groan when his hand moved to its new destination.  Her head sagged forward, her eyes squeezed closed as she trembled against the onslaught.  He was deliberately teasing her.  He was pressing all the right buttons, except for one.  The one that would send her spiralling over the edge.  Her g-spot.  She knew he knew where it was, especially when he lightly grazed over it to make her quake and whine his name.<br/><br/>The competition was definitely on now.   Most of the time she hated it when her friends went into the intimate details about their sex lives, she really didn’t want to know.  However, on this occasion some of what she had heard could prove interesting to test out.  She knew she could probably bring Cooper to his knees by finding his g-spot, but the process for doing so was just too icky to think about never mind doing.   On the other hand she could try to make him weak at the knees.   All she had to do was find the smooth little area of skin, between his scrotum and anus, and according to her friend if she stroked with a little pressure, it would increase stimulation.<br/><br/>Worst case scenario Cooper thought she was crazy and asked her what she was doing, which she could blush her way out of and distract him since he thought her blushing was cute.  A few more strokes of her hand, and she let go, only to move her hand further between his legs, a gentle tickle of his glands and her hand moved further back still.