Then suddenly Ellen heard a long gurgling noise come from beneath the nakedly fucking boy, the sound erupting deep, deep within Jennifer's throat as though she had no control over it. The girl's buttocks jerked uncontrollably up towards Phil several times, the lips of her tightly clasping cunt working and sucking at his cock as though trying to milk him dry. At the same time the boy groaned above her and quickened his stroke, grinding hard and deep, his thick fleshy rod beginning to throb its milky white sperm deep down into her gratefully accepting belly. Ellen gasped as she saw Jennifer's head thrash from side to side under the final ravishing strokes. At the base of her glistening crotch Ellen could see clearly a tiny white stream of their intermingled cum trickle down over her naked thigh and dissolve lewdly into the sand below. One last throbbing jerk sent the couple into a subsiding spasm, and then they lay still, her sister's legs splayed obscenely out at the boy's sides.

The older man now stood over the immobile, but heavily breathing couple, rubbing the lust-incited shaft of his long hard penis into a fiery poker of flesh that he held as though he were brandishing a lance. Ellen knew all too well what was coming next and she began to move away, too horrified to watch, but too fascinated by the obscene spectacle to avert her head completely. Phil looked up smilingly at the standing figure of his friend and pulled his half-deflated cock with a loud wet sucking noise from Jennifer's moistly glistening vagina.

The last thing Ellen saw as she slid down the sand dune was the figure of the other male shrouded in spooky moonlight plunging his rock-hard cock deep down into her older sister's already sperm-flooded vagina.