You both are taking a Bath

"Well I was planning on taking a nice, relaxing, bath, but..."

"That sounds great." Sarah then gingerly walks towards the bathtub with a little jump in her step as she turns on the hot water. You don't know how to feel just now about this, sure you and Sarah have taken baths together before but that was years ago when you two were like eight years old. Now it feels like you are too old to take a bath with your sister, and it feels a little embarrassing. "Hey what's wrong, do you think you're too old to take a bath with your sister?"

"N, no I was just thinking... don't you think this feels a little weird?" You ask hoping that Sarah would be as reserved as you are.

"Heck no, I like being nude, and with you here it feels even better." With that last statement it looked like Sarah's dick just got a little harder. "Now go ahead and get in the tub you big silly." Sarah then turned off the faucet as the tub filled with warm water. Sarah stood there, waiting until you got into the tub. The water was nice and hot, like a refreshing sauna. You closed your eyes and everything else around you just disappeared, until you heard Sarah say "Hey move over." You open your eyes and all you see is Sarah's big thick dick inches away from your nose.

"Oh sorry." You say as you try to scoot back, giving your little sister some room to sit down. "Don't remember the tub being this small when we were little." Sarah tries to sit down, but due to the cramped tub she has to put her legs over yours and past your waist so her crotch is smashed up against yours, with hers standing taller by about four inches.

"Yeah, this use to be more comfortable back when we were smaller." Sarah started to grind her dick against yours after that last remark, almost as if to make fun of your smaller cock size. Her bigger, thicker dick just rubs against yours, shaft rubbing yours, bigger balls crushing yours, but Sarah doesn't register it at all, acting like nothing's happening. "Wait, I need to grab the soap." Sarah gets up and turns around to grab the soap off of the shelf, leaving you face to face with her young butt. Like the rest of her body it is so smooth and looks so soft. Her cute little butt is so perfectly round that it hypnotizes you for a second until your concentration is broken, as Sarah turns around and dick slaps you. "Hey Doug do you think you can help me soap up, I need you to scrub..."