Dan pulled up to the sandy beach in his beat-up old car, a mischievous grin spreading across his face. He glanced over at his three sisters, who were chattering excitedly in the back seat.
Sarah, the bossy one, rolled her eyes at him. "Don't even think about it, Dan," she warned.
But Dan was already reaching for the knot on Sarah's bikini top. With a quick flick of his fingers, he untied it, revealing her perky tits.
Sarah let out a shriek of surprise, but she wasn't one to be embarrassed easily. She playfully insulted Dan, calling him a "pervert" as she fixed her bikini.
Dan just laughed and turned his attention to Emily, the flirtatious one. He untied her bikini top next, and Emily took it as an opportunity to tease him.
"Well, well, well, someone's got a little problem," she said, eyeing the growing bulge in Dan's swimsuit.
Emily's tits were even bigger and more voluptuous than Sarah's, and Dan couldn't help but stare. Emily noticed and made a playful insult about Dan's "little problem."
Next, Dan turned to Rachel, the quiet one. He untied her bikini top, and Rachel covered herself up, scolding him. But Dan could see the hint of a smile on her face. She secretly enjoyed the attention.
Rachel's tits were smaller but firm, and Dan couldn't help but stare. Rachel noticed and playfully insulted Dan for staring.
Dan couldn't resist the temptation any longer. He untied their bikini bottoms, causing them all to try to cover themselves up while laughing and playfully insulting Dan.
Dan's dick was now fully hard and out of his swimsuit, causing his sisters to make fun of his "huge" dick.
His sisters then decided to play with his dick, teasing him and making him even harder. Dan's sisters then decided to take a dip in the ocean, leaving Dan to try and hide his hard-on.
When they came back, they noticed Dan's still hard, they made fun of him again. Dan's sisters then decided to take a walk along the beach, leaving Dan to try and hide his hard-on again, but this time they took his swimsuit with them, making it impossible for him to hide it.
As they walked away, Dan couldn't help but watch them, his dick still hard as a rock. He couldn't wait for the next opportunity to play another prank on his sisters. It was going to be a long, hot day at the beach.
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