lesbian slime girl sisters x their human bro

The boy's eighteenth birthday was supposed to be a celebration of maturity, but for him, it had become a dizzying, sensory delirium. His older sisters, Lulubelle and Marilla, were not ordinary siblings. They were Slimegirls ethereal, translucent beings of sentient, viscous fluid whose bodies were composed of a shimmering, pastel colored gelatin that responded to every impulse of desire.

The morning began with a secret pact. Instead of a cake or presents, they had decided to gift him a day of pure, unadulterated sensation.

As he sat at the breakfast table, feeling a strange, heavy warmth settling in his lap, he didn't realize that the two sisters had already abandoned their chairs. Under the tablecloth, Lulubelle, a vibrant, strawberry pink slime, and Marilla, a deep, lavender hue, had liquefied themselves. They flowed like warm honey into the waistband of his boxers, their semi liquid forms sliding effortlessly past the cotton barrier.

By noon, the boy was a trembling wreck. He sat on the sofa, attempting to watch a movie, but his focus was entirely hijacked by the two living masses of goo teeming within his pants. Lulubelle had wrapped herself tightly around his thick, twitching cock, her viscous body providing a constant, rhythmic suction that felt like a thousand tiny, wet mouths. She pulsed with a warm, rhythmic heartbeat, her essence seeping into his pores to keep him in a state of perpetual arousal.

Meanwhile, Marilla had taken a different approach. She had funneled her lavender mass downward, coating his puckered entrance in a thick, cooling layer of slime. She began to undulate, her gelatinous body performing a slow, hypnotic massage of his prostate, her weight pressing firmly against his sensitive depths.

The sensation was overwhelming the heat of the pink slime squeezing his shaft, the slippery, undulating pressure of the lavender slime working his ass. He could hear the wet, squelching sounds of their bodies merging and shifting within the dark, cramped confines of his underwear. Every time he tried to shift, the slimes reacted, tightening their grip or flowing deeper into his crevices, turning his birthday into a relentless, gooey marathon of pleasure.