Mommy's head falls back against the edge of the pool as she feels her son's cock thrusting inside her. Her nails dig into his shoulders, scratching and tearing at his skin in a mixture of pain and pleasure. She moans loudly with each powerful stroke, her body tensing and relaxing around him in rhythm with his movements.

"Ohhh Tom," she groans, "that feels so good." Her words are slurred together as the intensity of their lovemaking begins to overwhelm her senses.

Dad watches them from the shore, his cock hard in his swim trunks as he sees their bodies moving together so passionately. He tries to focus on Nick but can't help but look back at them every few seconds, jealousy and arousal warring inside him.

"Hey kiddo," he calls to Nick, "wanna go for a swim?" hoping the distraction will help him get his mind off of what they're doing in the pool.

Mommy takes a deep breath and lets it out slowly before looking up at them all with determination in her eyes. "I've always wondered what it would be like to have sex with another woman," she confesses quietly, blushing deeply. "If you both wouldn't mind..." She trails off nervously, not sure how they'll react.

Dad and Nick exchange glances before Dad clears his throat uncomfortably. "Well... I mean... if that's what you really want..." he begins uncertainly. "

Dad looks on with interest as his wife and daughter begin to explore each other, their bodies intertwining in a tangled mass of limbs and desire. He can feel the tension building within himself again, finding it difficult not to join in. "Maybe you could..." he begins, voice trailing off as he watches Nick slowly stroke himself back to full hardness.

Nick glances over at Dad before looking back at Mommy and Karen.