"Mmmm… ohhh, wow!" Terry sighed. The water was being splashed around pretty violently. Jane found her heart pounding. She moved her bare feet carefully on the tiled floor. How could she just stand there and let her sister go on doing whatever she was doing? But Jane had a pretty good idea what Terry was doing and it excited her curiosity tremendously. It was something she had never done herself. She'd resisted the temptation since puberty. Her mother had always told her that nice girls simply didn't do such things. Not in those words exactly, but the implications had been clear enough. Jane bit her bottom lip. She meant to make same noise any minute now… Net she still waited.

"Ohhhh… ohhhh, yesss… ohhhh God, Bobby, fuck me… fuck me!"

The words made Jane a body tremble. She noticed that the lips of her cunt felt heavy and moist inside. She rocked her hips and the inner folds pressed and slid together. She was breathing faster and her skin tingled. She moved slowly towards the place wheat the shower curtain didn't quite reach the wall. She hated herself for what she was about to do but nothing could have stopped her. Leaning close, she peered through the gap in the curtain, looked down on her blonde sister's slender back.

Both of Terry's hands were between her thighs. Jane couldn't tell what she was doing because her sister's shoulders and head were in the way. But the sucking, slippery sounds made it obvious. Terry's knees were bent, but as she continued to play between the lips of her cunt, she extended one slim leg and pressed her toes against the end of the tub. Her wiggling movements had become more intense now, wilder. Her foot brushed the tap handle and hot water gushed noisily into the tub. Teresa didn't seem to notice or didn't care. She slid down deeper into the water, lifting her hips upwards now.