Jenna stood in her bedroom, the little vial of glowing pink liquid still in her hand. She had always been the hot and sexy girl guys jerked off to, but tonight she wanted more. She tipped the vial back and swallowed every drop. Heat flooded her chest immediately.
Her tank top stretched tight as her already full C-cup tits began to swell. "Oh fuck, yes," she groaned, cupping them. The flesh ballooned outward, nipples thickening and darkening. But the change didn't stop there. A tight pressure built just below her original breasts. Two new nipples pushed through her skin, pink and puffy, then the mounds behind them inflated fast. Two more heavy tits dropped into place, jiggling as they grew to match the first pair.
Jenna ripped her top off. Six fat, sensitive tits now crowded her chest in three rows. She squeezed the lowest pair and gasped. Every breast felt connected, every nipple wired straight to her cunt. More pressure hit. Another pair of buds formed beneath the second row, pushing out two additional tits until she had eight big, round, multi-boobed tits stacked and swaying.
Her pussy was soaked. She shoved a hand down her shorts and rubbed her clit while she played with all eight tits, pinching nipples, lifting them, feeling their weight. "Look at these fucking multi-boobs," she panted. "So hot, so fucking sexy."
The door opened. Her boyfriend Mike froze, then his cock visibly hardened in his jeans. "Jesus, Jenna."
"Get over here and fuck me," she ordered. "I need your cock between every one of these tits."
Mike stripped fast. His thick dick stood straight out. Jenna dropped to her knees and smothered it between the top two rows, then the middle, then the lowest. Eight heavy tits wrapped around his shaft from every angle.
She tit-fucked him in sections, sliding up and down so her slick skin dragged over every inch of his cock. Pre-cum smeared across her nipples.
Mike grabbed two lower tits and squeezed hard. "These are so fucking big. So many nipples." He leaned down and sucked one, then another, moving between them while Jenna kept working his cock with the rest.
She stood, shoved him onto the bed, and climbed on. Her eight tits hung and bounced as she straddled him. She lined his cock up with her dripping pussy and sank down. Every bounce made all eight breasts slap and jiggle. Mike reached up, grabbing four at once, thumbs flicking the hard nipples.
"Fuck me harder," Jenna snarled. "Use these multi-boobs while you pound my cunt."
Mike flipped her onto her back and drove into her. He buried his face in the middle row of tits, sucking and biting while his hips slammed. Jenna reached down and pressed two lower tits together around the base of his cock every time he bottomed out. The room filled with wet sounds and her filthy moans.
She came first, pussy clenching, all eight tits shaking. Mike pulled out, straddled her chest, and shoved his cock between the top two pairs. He fucked the deep cleavage they made while she licked the head on every thrust. Cum shot across her upper tits and splashed down onto the lower ones, coating every nipple.
They didn't stop. Mike stayed hard. He fucked her from behind while reaching around to grope every row. Jenna kept one hand on her clit and the other squeezing her own extra breasts. Every orgasm made the new tits feel even more sensitive.
By the time they collapsed, Jenna's body was covered in sweat and cum, eight heavy multi-boobs rising and falling with each breath. She smiled, already knowing she would drink more of that formula tomorrow. She wanted even more tits, and Mike was going to fuck every single one of them.
