She held his balls in her right hand, closing the fingers of her left about his hard cock. She held his prick tightly as she jacked up and down. Purring sounds of pleasure came from her. Dave dug his fingers into his sister's inner thigh, feeling the smooth flesh. The edge of his hand barely touched the crotch of her shorts, and he could feel the heat her young cunt generated through the tight cloth.

Judy cupped the head of her brother's cock with her palm, feeling the wet heat. She twisted her palm, her fingers holding his prick. Dave groaned with delight and moved his, hand between his sister's thighs. Judy opened her legs without thought, and her brother cupped her cunt, feeling her pussy through her tight shorts. Judy gasped when he applied pressure against her clit.

Inside the house, Joann felt, as with a sixth sense, that her son and daughter were up to something at this very moment. The feeling was very strong. She stood in the kitchen, her hands clasped, eyes squeezed tightly shut. She knew they were doing something erotic to each other. She just knew it.

She had her hand on the door knob before she could restrain herself. The door opened into the attached garage, where she knew Judy and Dave were. They were in the garage often, spending hours at a time. A brother and sister just didn't spend so much time with each other unless they were up to something, Joann felt.

Clutching the door knob, trying to make up her mind, she felt wetness soaking the crotch of her panties. Her nipples seemed harder than they had ever before been, so sensitive she could hardly stand the touch of her bra on them. In fact, her bra suddenly felt much too small to contain her tits. Either her bra had shrunk, or her tits had suddenly swelled another size. She felt the cheeks of her shapely ass clench tight, and there was a burning sensation between her thighs.