You were walking down the academy hallway with your best friend. You guys were going to Wands Class, where if you forget to bring a wand to class, you'll get expelled (don't ask why)

Your friend gasped! He forgot his wand! You look down at your wand. If you give him your wand, your friend will be safe, but if he doesn't have a wand, he'll get in trouble!

So, WWYD? ;)