Make a pair of panties out of rope wedgie yourself with it and sleep like that all night

Wedgie yourself and go out in short skirt trying on shoes tomorrow, so ales guy see's your wedgie

Not sure how crazy you want to go but here's something.

Stuff a pair of panties inside your pussy, then put on a thong and wedgie yourself so that the pair inside you doesn't come out. Tie your wrists together and to the top of your bed. You have to wear the panties tomorrow that were inside you.