Jen opened the door.
"Oh, hello, Kyle. I was planning to T or D you, but it seems that your sister has some ideas." Kelly walked up and stared at Kyle.
"Transform or Dare, 'brother dearest'?" She asked sarcastically.
"I... Kelly? How could y–"
"Too late, you get both." Said Kelly with a smirk. "For your transformation, you will become and stay as a 14 year old girl with short, medium brown hair, and the ears and tail of a dog the same colour. You'll be modestly but cutely shaped. Nobody but us can use Transform or Dare on you. For your dare, you'll be our personal maid, and will do everything we tell you to. You will call both of us mistress, and you can't leave the house or talk to other people unless we let you. If you're nice enough, we might ease some restrictions, which might be likely since you'll devote yourself to us and yearn for our affection. Oh, and also, you'll have some canine personality traits, too." Kyle was left speechless.
The two yanked the stunned Kyle inside and watched as he changed. The seventeen year old boy shrank rapidly, his waist collapsing as his hips and chest expanded, but only slightly. His, or rather her, hair turned a dirty brown as her ears shifted to the top of her head and became more dog-like. As a tail made its way out of her tailbone, she screamed, her masculine voice becoming high and feminine as her Adam's apple vanished and her genitals were replaced. The clothes on her body also shifted, becoming a t-shirt and shorts. After all, the girls didn't want to stay in a house with a stereotypical maid. Modesty was the aim, especially after Kyle's delusions of domination. Kyle, now Kylie, now stood up, dwarfed by Jen and Kelly.
"What can I do for you, mistresses?" Jen and Kelly looked at each other and grinned.