Vicky could hardly think. The wild show before her eyes was exciting enough if she'd had no personal connection. But the fact that it was her father and his sister making love on the billiard table in her very own home… She worked her teeth against her lip and felt another tingle of pleasure shoot through her pussy.

Carl was holding his cock deep again now, resting his chest against Mona's tan back. They were both panting like crazy and, except for an occasional shiver or jerk, the fucking seemed to be at an end. Vicky could see her father's cum making whitish trails down the insides of both of Mona's thighs now. The hot stuff leaked all the way to her ankles and dripped off slowly. The room was full of a sharp smell, something Vicky had never had a whiff of before. She wasn't sure it was Carl's cum she smelled. But she hadn't smelled anything like that when they'd just been fucking.

"That'll ruin my tennis game for the rest of the day," Mona breathed as Carl continued to kiss her back. With a sucking sound his cock slipped from Mona's body and Vicky held her breath again as she watched the cum hang in strings from the tip. Mona turned and slid to her knees on the floor before Carl. With hungry animal sounds she began to clean him up. Vicky watched spellbound. She'd never in her life heard of such things happening. But the two of them were even closer to her vantage point than before. She could see her aunt's tongue flicking out, curving around the cum-coated head. Carl's cock was only slightly wilted and it hung down at a curved angle. His sister held it up delicately with her long fingers, her lips and tongue working gingerly over the raw, fevered surface. Then she turned her face brightly up at Carl and smiled, cum glistening on her lips. Finally, Vicky managed to swallow.