"I've had a baby before," Eileen said teasingly, "but you haven't. If you want a baby so bad, I should get to knock you up."
"But I don't like guys-" Ty piped up.
"You will when you change," Eileen assured him. "You said you'd let me make a wish, so do it- turn into a girl and turn me into a boy, and let me knock you up."
Ty bit his lip, and wished for Eileen's request to come true.
Both their bodies felt strange and aroused from the unfamiliar hormones rapidly proliferating in them. Eileen kissed Ty firmly, and they noticed their voices' pitches reversing. "Whoa, I already sound like a man," Eileen observed, a bulge emerging in her throat as it vanished from Ty's and his voice turned softer.
The beautiful Brazilian before Ty became handsome, her facial features firming and her muscles growing more pronounced, while Ty felt his face smoothing and his muscles turning more petite. He noticed Eileen's breasts were withering, but was surprised that he didn't feel disappointment at her losing her femininity- Eileen seemed attractive in a whole different way.
His hazy focus meant he didn't notice when she reached over to pinch Ty's nipples, and Ty moaned surprisedly at how sensitive they felt. "Your tits are forming," Eileen informed him, and he peered down to see large soft mounds of flesh sprouting under her touch.
It surprised Ty that when he noticed Eileen's flat masculine chest, he didn't feel like she had nothing there like he always had with guys. The firmness and muscle seemed appealing all of a sudden, and as he noticed Eileen's legs turn more muscular and large while his got more lithe and petite, her hips narrowing while his widened, the reversal of their bodies became more and more obvious.
At last the changes reached their crotches, and Ty and Eileen's eyes were on each other's bodies and their minds on their own as they each changed. Ty saw Eileen go from rubbing to jacking off her clitoris as it swelled into a phallus, and her vagina sealed up with two mounds moving inside it. Simultaneously, his testicles pulled up inside him and his scrotum tucked inwards and a slit formed down its centre, while his penis shrank into him and grew more and more sensitive until it formed a clitoris.
When they finished changing, the wish clicked in Ty and Eileen's heads. Eileen was now male and Ty female- and they could both smell the heavy scent of pheromones emanating from each other's bodies.
Eileen threw himself onto Ty and kissed the freshly changed girl, his erection rubbing against her stomach and dripping precum while her nipples and clit grew hard and her pussy leaked hot juices.
"Still don't like guys?" Eileen teased. Ty shook her head and he giggled. "Good," he purred as the tip of his cock brushed over Ty's clit. "Cause I'm going to breed you."