A Lesson in Doubling
"Let me show you how doubling works." Your math tutor explains. Helena's a sweet young woman in her mid-twenties, dressed like a teacher in her own right. Her white button-up blouse and black skirt compliments her glasses and chestnut ponytail.
"You see how there's not much here?" She asks, bizarrely referring to her paltry bust. They're barely a handful. You nod your head. "Let's say this is one. Now what's one plus one?"
You answer "Two."
"Correct!" Helena grins. You think you see something change, but don't bring it up. "Now what's two plus two?"
You answer "Four."
"Yep!" She says, and you think that, too. Helena's breasts have definitely grown, though she's probably a B-cup, at most. "Four plus four?"
"I think you've got the hang of it." Now Helena's breasts rival most of the girls' at school. "Next?"
You don't even need to be told you're right. The shift is