She does

If you can't trust yourself, who can you trust, right?

Gracie handed the device over to the naked Gracie.

"Thanks hun." she said as she accepted it.

The naked Gracie pressed the time freeze button on the device, then disappeared. But she was not the only thing that had suddenly left the room. Gracie no longer felt the pressure of her bra strap, or the feeling of her t-shirt pressing against her skin. Nor, for that matter, could she feel the faint pulling of the belt around her waist. She felt a slither of air against her bare legs. Suspecting the worst, she looked down.

She was completely and utterly naked.

Panicking, she covered herself with her hands and looked around the room. Why on earth would she do something like this to herself?

The school announcement system suddenly sparked into life with a crackle. There was a speaker in the corner of every classroom and in every hallway, so Gracie heard quite clearly when her alternate self suddenly began to speak over the system.

"Good morning students and teachers," alternate Gracie said cheerfully. "It is my great pleasure to advise you that Gracie is attending school naked today, and will remain that way for the foreseeable future."

Gracie felt the blood drain from her face. There went her chances of sneaking away unnoticed somehow.

"However," the voice continued "None of you will notice this fact; you will not acknowledge or remember her nudity at all."

Gracie frowned. For some reason, a feeling of dread and horror seemed to wash away from her. She lowered her hands to her side. Why on earth had she been covering herself for if she was fully dressed?

"And finally," the other Gracie continued "You will strip naked and have sex with her whenever she requests it of you. You WILL notice and acknowledge each other's nudity, however; that will remain unchanged. Only Gracie is immune. That is all. Thank you and have a great day."

Gracie blinked, and suddenly the other Gracie was standing in front of her wearing her jeans and t-shirt. She pressed the mind control button on her device.

"Back to normal, Gracie."

Suddenly Gracie remembered that she was naked. She covered herself with her hands, her alternate self giggling at her embarrassment.

"What the hell are you doing?" Gracie demanded.

"Oh relax; it's going to be fun!" alternate Gracie replied. "When I was you, future me did the exact same thing. Trust me, it's a blast!"

"I can't just spend all day naked!" Gracie snapped. "What about when I try to go home? Only people who heard that announcement won't notice me!"

"That's what the broken time device is for. Have your fun, and when you're finished you can use that to travel back in time and try to push yourself into your locker. You become me, do what I've just done and leave with this fully functioning device instead!"

The other Gracie pressed a button on her device, and suddenly she was gone - leaving Gracie naked and alone with a half functioning time device. She snatched it up from where it was resting on one of the woodwork tables, and was about to press the button...

...it suddenly dawned on her, however, that nobody else in school would notice that she was naked. And they would have sex with her on demand wherever they were.

Gracie bit her lip.