I think another wish is in order

Ruby broke away, gasping for air. Jacob didn't miss a beat, moving his tongue down her chin and along her neck. She moaned, her breathing ragged as the fullness of his monster, the wet heat of his tongue, and the sheer weight of his body encircled her.

"I wish your balls matched your dick," she said, her voice hitched at every turn by a sudden movement of his tongue or flexing of his cock.

"I wish your balls matched your dick."

Jacob was lost, lost in this pocket pussy beneath him. Her sweat, salty and sweet, was all he could focus on as he lapped it up. But the sound of her voice mingled with his own, reverberating through the din of erotic passion. He grunted, and the magic set to work.

His balls were not necessarily small. They'd be average on any normal man, but when compared against Jacob's gangly frame, they didn't seem fitting. The energy was about to fix that.

The skin of his nuts bulged outward, the once wrinkly skin becoming taut. The balls, once the size of cherries, grew to ping-pong balls, then apples. Each one filled with more cum than a sperm donor might give in a whole year. The skin connecting the balls to his hips stretched, letting these magnificent cum-tanks hang lower. They slapped against Ruby's ass, eliciting shivers as they rested against her. The warm, churning mass of her man's cum, so potent that she wondered if she'd get pregnant just getting a facial.

Jacob's head reared back, and he moaned. It reverberated through his throat, sending little shivers down into Ruby. The moan became louder, louder still, until his cock was fit to bursting. Ruby screamed as a torrent of milky cum spilled into her. Her belly stretched even further, filling her womb like a waterballoon. The cum had nowhere to go, huge globs pushing past her pussy lips to leak out onto her ass, his balls, and the couch.

Ruby's eyes were wider than saucepans, and her mouth only joined her. The light above framed her boyfriends body above hers, his chest speckled with little freckles that swirled before her very eyes like a starry night sky. His hair was wild, drenched in sweat and clinging to his face. His mouth, too, hung open. His tongue lolled out, and his breath fogged as it came out. His eyes met hers, and all either of them saw was desire.