Accidentally rip your shirt

As you back up after putting your hoodie away, your shirt snags on the corner of your locker. You are about to unhook the shirt when you get an idea. Instead, you yank back as hard as you can. The shirt rips all the way up the seam. You slam the locker shut and yank back again, tearing the shirt further until it rips off of you. You are now in just a bra, pants and panties. Almost half as many clothes as you started the day with and it's only first period.

Satisfied, you go back to the classroom. You cross your arms over your chest to cover and put on your best sad face. You enter the classroom. The teacher immediately comments "I had no idea you didn't wear a shirt under your hoodie. Otherwise I wouldn't have..."

You interrupt with a fake cry "I'm sorry! I'm so clumsy! I accidentally got my t-shirt stuck in the locker and now I'm about to be in trouble!"

Your teacher consoles you "I'm sorry, I had no idea. Listen, it's okay. You're not in trouble."

"Really?" you ask with puppy dog eyes.

"Yeah", says the teacher, "I'm not angry at you. Just try to be more careful. If everyone can promise to behave and be mature and if it doesn't bother you, you can take a seat and finish the class."

"I'll try not to let it bother me, ma'am.", you lie as you don't have to try at all in order for this not to bother you. The boys sneak peeks at you and your bra but they stay true their word and don't cause any trouble. And so, your first class ends with you down two pieces of clothing. And a great excuse for why you'll be lacking both items as your locker now has a shirt jammed in it and you can't open it.