we have a kid in our class who is quite posh, and he knows it, so as a joke he brought in a pocket square for his suit (we wear suits in year 11 onwards since it's a british school), somebody took it and tossed it out of the window, which is a 3rd story window, except the pocket square landed on an overhead wire, so we had to dangle someone from the window, with 3 people holding each leg, and he used a long plastic strip which covered some wires to slap the wire to make it fall down, two teachers ran in completely white, scared stuffless that we were going to drop him accidentally
in the classroom where my form are registered, somebody found 5 packs of playing cards at the back of a locker, so we emptied them and threw all 260 cards in the air, people started picking them and throwing them like magicians do. our teacher comes in and tells us to pick them up, next day, we unplug the cables from his computer, so that when he had to plug them back in, he'd have to move the 5 packs of cards to plug them back in, at lunch people sellotaped some together and covered the monitor with them, and put them in the gaps between keys in the keyboard, and that went on for a week, i snooped round that classroom the other day since i haven't been in it for a year and i found a few behind the lockers
another time, i was with a friend and i had left my bag in a second floor classroom, that conveniently has a 2 metre tall bag rack under the window of it, the window was open so i decide to start climbing the bag rack so i could jump up and climb through the window on the outside, i say to my friend who is watching "tell me if any teachers are coming", and just as a stop saying "coming" a teacher comes round the corner and smirks at me, as i'm dangling from a window
this one seemed stupid but was funny at the time, a fight was planned in a classroom to settle something, so in rush about 80 students into a tiny classroom designed for 20, all the doors are locked and the windows closed since that window faces out onto a main road, the fight starts and everybody is screaming, about 5 teachers rush up, banging on the doors, so in about 30 seconds, all 80 of us burst out of one of the doors (the classroom has 3 doors going into it) and ran down the stairs and hid in some room nobody ever goes in, the teachers still wonder what happened to this day
