I'd scream

Ah, well they're these light thin squares ( sometimes rectangles) and like if the teachers want to decorate the room they actually have the tall kids stand on desks to hang stuff through the ceilings

Nah they do the same in australia, my school has them we always jump up and knock them out

Well mine didn't, maybe it's fancy

Its pretty fun to mess with the teachers if you hide cellphones in there (one in each corner of the room), then have a student in the room call the one in the corner opposite to where the teacher is standing at random moments during class.