Walking into the shower room he saw her through the glass wall in the front of her. She was standing there with her back against the wall. Her legs were spread apart with her eyes closed and her head thrown back.
One hand was on the underside of her big fleshy breast with her fingers digging into it. Squeezing and releasing it made her pointed nipple move in and out. The other hand's palm rested on her mons with two fingers furiously attacking her clit below it. One finger holding the hood back and the other pushing in and out against it.
Her head flailed side to side when she released it and went lower plunging both fingers deeply through her dripping cunt lips into her. Smooth with no hair on her he was able to see them going in and out of her rapidly as her moans grew louder.
Gritting her teeth it looked like she was in agony. He stood watching her as his cock grew to its full eight inch length. Unable to watch her not reach the place she was trying to go to but couldn't get to he could stand it no longer.
She hadn't turned the water on yet so he opened the door and stepped into the four person stall. Her eyes flew open. Frozen in place unable to move a look of shock on her face at the sound of the door closing she stopped the frantic movements of her fingers.
He was the husband of her sister that was there visiting her after her divorce for the weekend. She went to speak but his finger went to her lips and pressed against them. "Shhh" was all he said.
Gripping her wrists and moving her hands to her sides she felt his erection pressing into her as he moved his body forward against hers. The hardened nipples on her breasts pressed into his muscular chest.
His lips mashed into hers and their tongues did a dance. Her feeling of lust for his body had driven her to the shower. Her sister had kidded her about her husband having the hots for her. She had been sitting alone with him thinking about that when her sister left them alone to go and pick some things up at the store. Going to the shower to quell her lust filled thoughts she was seeking some relief from the heat and wetness between her legs.