They obey

"You can't mean that," Grace says with a trembling voice as both girl stare wide eyed at you.

"I mean exactly that," you sneer. "Get to work or you can go see the headmistress. I understand there's a new Dean of Students too, perhaps you'd like to discuss this vandalism with them?"

"No...no...we'll clean it up," Sally whimpers, her hands reaching for the bottom of her shirt. Her eyes are shiny with unshed tears as she slowly starts to pull it up, as if hoping you will change your mind.

"Both of you," you order. "I'm out of patience."

You smile to yourself as you see Grace grab the bottom of her shirt and with a look of resigned determination, pull it over her head. Her small breasts look delicious on her slender body, her stiff brown nipples perfectly decorating her flesh. She looks at you with a measure of defiance as Sally strips off her own top with a muffled sob. More shy than Grace, she covers her breasts with arm but not before you see that the two of them are near perfect matches, their small conical breasts firm and high on their chests, their nipples hard and stiff.

"Get to work," you nod, leaning back against the door, enjoying the sight of the half-naked teens climbing onto your bed, their shirts in hand.

As you expected, the spray paint is half dry by now, and certainly had no chance of simply being wiped away. The most the girls can do is smear some of the paint, ruining their shirts but doing little more than blurring some of the words.

"It's not working," Sally says in frustration, looking over her shoulder at you.

"The paint is already dry," Grace adds, turning as she speaks, giving you another view of her small sweet tits.

"Well, then you have a problem don't you?" you say with soft menace. "If you can't clean it up, then I'll have to think of an appropriate punishment."