Almost immediately Jen's breasts vanished, shrinking back into her chest. But like some odd spring they pushed right back out, but into a pair of pecs, not as large as Jake's but descent. Jen's body started growing outwards, getting taller and broader, taking on a more masculine shape. Her muscles thickening, veins popping out on her arms and legs. Her clit swelled, pushing outwards, taking on the familiar shape of a cock, an average 6" erection sticking right out from her crotch. A bulge formed under her new cock, growing out into a pair of egg sized balls, huge unlike the accompanying cock.
Kyle looks down at Jake, still bobbing up and down on his cock, too busy to watch Jen's transformation. He was expertly keeping Kyle just inches from orgasm, combined with the changes taking over Jen driving him wild.
Jen's blond hair turned black, but stayed shoulder length, taking on a slight waviness. Jen's face started reshaping, her jaw square, a thick brow, over now brown eyes. A face not of a teenager but a man. Her skin began to darken, becoming a rich caramel, nipples and cock becoming a dark brown. Black hair covered her arms and legs, a trail leading from her pubic bush, up her abs and to between her pecs. A light covered of black hair coating her chest. A neatly trimmed goatee growing in on her chin.
Kyle squirmed, shooting his load into Jake's mouth, who swallowed every last drop before pulling off and licking his lips. Kyle panted as he looked Jen over, now a lean latino in his mid-twenties. "Hmmm, nice, and look at those balls, you like them big don't you Jake?" Jake nodded, his eyes locked on Jen. "So Jake who is that?"
"Hector, he mows our lawn." Jake tried to look away, but his eyes lingered on the man Jen had become. It was spoiled a bit as Jen kept crying, tears streaming down her tan cheeks.
Kyle leaned forward. "I bet I can make it better for you Jake. Jen, your balls will grow to be the size Jake wants, let's see how big he really likes them." Kyle's softening cock, sprung back erect as Jen's balls started growing. Soon they were the size of baseballs, and looked about as heavy, but they kept growing until Jen looked like she had two flesh colored grapefruits hanging from her cock. Without Kyle even telling him too, Jake crawled forward, grabbing Jen's cock, stroking it with his hand as he ran his tongue all over her two giant testicles. Which just made Kyle start laughing. "See, Jen, you thought you had the best boyfriend didn't you? But he wants cock more than he ever wanted you." Jen was still crying, but her head was tossed back, soft moans escaping her lips at the attention Jake was giving her. "Jen, tell me what you want most in a guy. I don't want to leave you out of the fun."