That reminds me of a school holiday to France Muttley.
I had to share a crappy top floor room and it was the only one without a balcony etc and was pretty pissed off about it so we kept lobbing stuff out of the window towards the balconies below (which belonged to other people from our party). We couldn't see properly where we were aiming though and were chucking water or bits of water soaked bog roll. One morning a teacher came around trying to find out who did it as his wife was sitting outside and got soaked and also I think something like a fruit machine got knackered as well 
. We denied blindly and got away with that one
On the way back the ferry everyone was kept inside as it was gale force winds and we got bored. This kid was playing up and messing around with this rubber device that he presses in the middle, puts it down and it kind of pops and projects in the air. We basically talked him into putting near people who were asleep and then eventually on this guys forehead who was asleep and looked like he may have been "special" if you get what I mean. The guy freaked out a little when it woke him and the kid got totally bollocked and blamed us who got shit for telling him to do it 