Haha, i've done similar to Pirog, but it was involving cereal and myself, i was watching tv and I was kind of spilling my cereal all over me, but I never noticed until half of it was all on me.
And I have done/seen some other funny things..
My freind went down a hill on a trolley. Because the trolley hit the grass it started spinning around.. me and my mates were at the top of the hill wetting ourselves with laughter, as the guy in the trolley was screaming for us to help him. Another funny part was there was a road at the bottom of the hill, made it down the kirb all right but crashed into a parked car at the bottom and went flying across the bonnet.
Another one was, I know this boy, who wouldn't go on a roundabout, me and my mates usually went to the park for our lunch break, and we persuaded him to get on the roundabout, so he got on it, a few other people were on it, and as the roundabout was being pushed we all jumped of apart from this other boy who was the one who hated roundabouts, well.. as mates do, we pushed the roundabout faster and faster, whilst he was screaming.. 'Nah blad stop it, stop it' a few minutes later we stopped the roundabout, after he had recovered from the roundabout, he was pissed and squared up to one of my mates who's idea it was, (Being the pussy that he is) he picked up my mates bag, and literally threw it as hard as he could, and it landed in front of him, and then they squared off. HAHAHAAA!!
Another funny thing was running over a car.

There was this green astra parked outside the owners house.. so i thought..

.. why not, something new.. so I took a run up, ran towards it, jumped on the bonnet, then onto the roof, then dived off the end of the car, only to rip my trousers (Bummer), and see the owner come bombing it out of his house! That was quite scary so we ran, and ran, until we lost him.. and laughed like shit!
Also, the Aaron 'roundabout hater' barber, had an elastic band, and was randomly flicking paper pellets at passing cars, until the inevitable happened, it went in some mans window and hit him in his head.. (HAHAHA) So him being the unfit man that he is, sprinted (Going as fast as a normal persons walking pace) down an alley, the man in the car reversed up, whilst me and my other mate, Richard, we shouting "AARON" He then came back, walked a little close to the car, whilst the man was blasting him, and innocently said "Who, me?" Haha, what a wanker.
And another memorable moment at school, loads of people were behind the sports hall, as a teacher came round shouting at us to move away, she attempted to climb a maddy bank (Stupid) but fell down it, leaving lovely brown mud marks all over her.
I would tell more, but i can't be bothered, maybe later I will share..
Me and my mates are crazy bitches!!
(sorry for sharing this with the world, just out of Cantr minutes and alot of spare time)