When I was a Primary school teacher, I was infamous for catching out the entire pupil population on All Fools Day...

One year I sent a letter round (on L.E.A. notepaper) to all classes apologising for the cancellation of the Easter Holiday - even some of the staff fell for that one!

My finest hour was when we'd had a fire in the school kitchens, and the School Meals service had to deliver the food in containers.

We'd had a late fall of snow, so I sent a note round to all classes explaining that the school playing field was out of bounds during the mid-morning break, as there was a problem getting the meals delivered. Heavy snow near the Central Kitchens meant that the vans couldn't get through, so our food was being delivered by helicopter...

I made sure I was on playground duty that morning - children kept pestering me 'When's the helicopter going to get here, sir?'

Five minutes before the end of break, I blew the whistle (which meant the children had to stand still, in silence). I then shouted 'April Fool!' - and the kids erupted! I'd got them again!!