“Sure sis.” Bobby says and takes the sponge from Tina’s hand.
“Oh and here is the soap” Tina says as she passes it back to Bobby with her other hand.
Bobby hesitates for a second he is still holding his hard cock off of Tina’s back. A strange feeling runs through his body, like he had no control he let go of his cock and reached for the soap. His hard cock dropping forward and bouncing into the small of Tina’s back right above her full ass cheeks.
Tina feels something touching the top of her ass and leaning along her spine. As she realizes what it is she also realizes how long it is and how hot it feels resting on her back.
Naughty thoughts seem to come into her head from outside. She wonders how it would feel inside her. The very thought of it sliding into her cunt makes her pussy spasm. Blushing Tina shakes the thought out of her head and uses the motion to move her hair from her Back.
“ Are you going to sit there and soak or are you going to wash my back , Bobby?” Tina says.
At the sound of his name Bobby starts moving
“Sorry sis I was just enjoying the hot water I must have daydreamed off.” Bobby said.
He was daydreaming all right, the same one Tina just had. But it was not their daydream it was the house’s a daydream of his cock deep in Tina’s pussy.
Bobby put the soap and the sponge to his sisters back. As his hands run along her spine even with the soap and sponge in his hands the mere touch of his finger tips on her skin starts a shock that goes straight to his cock. He can feel it growing harder as it rubs against Tina.
“Don’t forget my neck.” Tina says and leans back into Bobby. The feel of Bobby’s fingers on her back are also sending electric shocks though her body. Her body starts to respond faster than she has ever felt. Her nipples harden. Tina’s pussy is throbbing so hard as her clit swells she cannot sit still.
As the wet sponge rinses the soap from Tina’s neck it also washes the bubbles off her full breasts. Bobby being taller has the perfect top down view of her full breasts and very hard nipples. This makes his cock jerk again and he is sure Tina can feel it.
As Tina turns her head one way and then the other it is like her ass is pressing her firm cheeks back and stroking Bobby's cock. He only half wishes she would sit still, half wishes she would move more.
As Bobby washes the tops Tina’s shoulders he gets another very strong curse driven urge to move his hands down and wash Tina’s breasts.
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