Flooding...
In year 6, my best friend to this day and I, along with a couple of year 5 kids, managed to flood the school.

During one lunch-time, I realised that the principles of leverage could be amusingly applied to a large drain-cover using a sturdy stick. We managed to pry the drain cover off, and being 10, balanced it on the edge of the drain and stationed one of us on either side of it, with the aim of jumping up and down alternately as though it were a primitive see-saw.

Naturally, the drain-cover fell straight into the drain, where it sliced straight through the mains-pipe. Ah, the difference between a drain and an access point for the mains-pipe.

We fled to the other side of the playground, acted as though we had nothing to do with it. The bell for the start of assembly before afternoon lessons rang, we went in. Through the windows of the assembly hall, we saw the janitor wading out into a very large and expanding pool of water.

By the end of the day, the entire playground was a good foot deep in water, and the next two days of school got cancelled. Never got found out, although I still feel a bit guilty about it every now and then. Guilty and very amused, anyway.
(oneiromancer was rifling through your fridge on, Thu 8 Sep 2011, 18:42, Reply)