You run home eager to try it out, You come across your older sister Natalie’s hairbrush. Natalie was 23 and attending NYU visiting home on break and has always been your bitchy sister.
Catching her casually sipping coffee on the couch you know that she was in her plush pajama shorts and a camisole. Long wavy blonde hair, D cups, curvy, etc. But that was going to change. You focused on which aspect you want to change and decided ALL of them!
Getting a good view you said “ masculescant transformatio”
Immediately her posture shifted , her muscles begin to bulk up as he stretched up in height. Stubble began to grow in on her legs as they shifted becoming masculine her feet broadening. Not being the only thing to broaden her shoulders widen and her jaw begins to broaden as peach fuzz works it’s way across her face. Her moans deepening as her muscles pushed past a female bodybuilder’s her heavy hands becoming fuzzy and spreading up her forearm. As her prickling facial stubble became a goatee her hair retracted on her scalp looking like a Paige boy cut she ripped off her pajama bottoms exposing her engorged clit her remaining breasts fizzled into pecs as her rubbing became a jerk. Her clit becoming a 9” penis as two baby balls dropped below and began to swell. Moaning in baritone as her hair on her head became a buzz cut and his goatee grew into a beard. The massively muscled hairy man jacking off in the living room looked nothing like Natalie. Becoming bloated in muscles stroking his 11” cock you finally said "masculescant claudum" as your freshly minted brother blew a bucketload of jizz.