Me and a mate used to do the whole 'slippery floor' thing when we were in our teens, except without actually destroying anything. Well, not much anyway... The skill lay in a) seeing how violently you could fall without actually injuring yourself, and b) seeing how extravagantly you could overact without anyone suspecting you were just pi55ing about. We were so good at holding a straight face, we probably should've taken up professional poker.