Two boys were Harry Potter spell-ing each other across the classroom using pencils as wands.

Student 1: PROTEGO! *pew!*
Student 2: PROTEGO! *pew!*
Student 1: AHHHHH *falls down*
Me: Alright, Harry Potter needs to go away. [Student 1] you need to get up and get back to work.
Student 1: Ooookay. Wingardium, leviosa! *stands up*
Student 3: Ms. S, can we turn off the lights?
Me: But then you won't be able to see to do your work.
Student 3: No, just wait until I say "LUMOS!" and then you turn them back on all sneaky.