Next pair of undies

Finally arriving at your desk, you retrieve one of many pairs you keep stashed in the bottom drawer. Sliding the plain white cotton panties on under your skirt, you find it to be a few sizes too small. You don't bother to check the rest of your underwear, you already knew Val had switched them all out. You knew some would be larger, but you also knew those usually ended in atomics, so you stuck with the pair that was already deep between your cheeks. The giggle behind you makes you begin to regret your decision.

"Well that's gonna make this fun!" Val laughs. "I have some papers for you to fill out. Can you get in your proper position to get started?" You definitely regret it now, but obey anyway to avoid an even worse punishment. With a squeal, you yank the back of your panties up to put yourself in a chair wedgie. You now had two choices, slowly stretch it out to ease them over the back, or climb up on the chair to secure them then drop down. Stretching it would take awhile, but be a bit less painful. Dropping down not only had a chance of ripping the panties, it would also be faster. However, it would be more painful and would just go to the next punishment.