-There was a "Wide!" when we played cricket in the playground. The teacher asked one of my classmates to fetch the ball. He never did and he claimed that the ball (which flew over the wall to the neighbouring school) was nowhere to be found. As it turned out, he was just playing on his Gameboy in the changing rooms and never even bothered to knock in the first place.
-One classmate of mine in Year 8 got a gooey alien stuck on the ceiling at the end of break time. We tried to scrape it off but we couldn't. We were late to the history lesson and the teacher asked us if we got confused about the room change. I lied and said yes.
-One time in Year 9 (this time a different school), two of my classmates deviated away from walking with the rest of the class between our two school buildings. They ended up in the Langham Hotel and pooped in front of everyone in a plant pot. Needless to say, they got expelled and the girlfriend of one of the classmates even mentioned it in her goodbye song. They got married at 16 and are still going on strong, 5 years later.