Second door on the right

Without locking the door, she rushed to raise her dress in an attemp to reveal the pressure caused by the built-up of her desires. The moment her fingers touched her slit she gasped audibly, which made her worry that he might have heard her. But it didn't matter at this point. All she could think about was the sound of his deep voice, the little smile he gave her from time to time and, of course, the tight package in his crotch at which she was constantly sneaking glances. And as she thought about this, she rubbed her cunt, dancing with her fingers around her clit.

"What are you doing?!"

Shit! She turned around to find Christopher standing in the corridor, staring at her in shock through the open door of the bathroom.