Under his sister's blouse, Dan paused. Well, of course, what else could he do but pause? He was a bra now; it's not like he could go watch TV.
But he realized, even though he had no eyes, he could still see. He had no ears, but could hear. And he had no skin, but he could feel. He could feel the cool silk of Kat's blouse as it moved gently over him. And, as he thought about it, he realized he could feel Kat's breasts.
Kat had sprouted boobs at twelve, when Dan was ten, and like any boy his age, he'd noticed. Boys wonder at the difference between boys and girls, and breasts are the first thing they notice. His sister filled out fast, and early, and he feared she noticed him studying her figure.
It's common for boys in puberty to think they're in love with their sisters, and Dan was no different. At thirteen, he had elaborate fantasies about becoming Kat's secret lover, even running away and posing as husband and wife. She had a great body, lustrous hair, and a vivacious personality. Too bad for Dan that she never had eyes for him.
By fourteen, Dan had healthier interests, and largely forgot about "loving" his sister. But he never forgot that she had a killer body. And now he was pressed against the breasts that had fascinated him for six years.
As Kat began to walk, Dan could feel her full breasts bounce and sway against him. And even though he was a piece of cloth, he began to wonder what he could do.