Just remembered a chemistry lesson where we were doing an experiment. I was burning bits of wood over the Bunsen burner...and I threw them in the bin before my teacher saw what I was doing.
Only I then noticed loads of smoke coming from the bin...there was paper in there, lmao. So I started using pipettes to squirt water to put the fire out...so then the bin started leaking. I put loads of paper towels on the floor and just sat, looking innocent. When the teacher came over and asked what had happened, my best friend muttered something about "waters breaking" and I burst out laughing. My teacher wasn't impressed