"I always did want to 'experiment'" Alex said with a smile as he clicked away some commands.
Miranda felt a tingle as her outer layer of clothes disappeared, leaving her in panties and bra. Her body began to stretch as she got taller.
Looking down to find what was causing the itching on her chest, she gasped as her cleavage began to sprout blond hairs. Her bra began to loosen as her breasts shrank and the muscles behind them tightened.
She moaned and looked down as she could feel skin pushing against her panties. The outline of something pinkie size was slowly getting larger.
Her feet expanded as hairs pushed out of them, making their way up her strengthening legs.
Her voice deepened as she moaned, watching as two additional mounds grew beneath her hard growing penis. Blond hairs rushed up hardening abs as her bra fell away from her tight pecs and much smaller nipples. Shoulders widened as arms got bigger, face squaring as hairs pushed out.
Alex found himself getting hard at the sight of his girlfriend turning into a guy, watching her penis grow larger by the second. Her panties were starting to strain as her bubble butt grew larger until they finally let loose, giving both a full view of her 5 inch uncut penis and hanging balls.
The new hairy blond man just watched as his penis continued to grow until it was 8 inches hard.
Miranda finally said her first words in her new manly voice, "Damn how do I make this thing go down?"
Alex just smirked as he said "I can help you with that hun."