Andrew got bored during a physics lesson and decided to pretend to cut my other friend, Mario's ear with a crappy pair of orange scissors.
When Mario failed to respond to the stimulus, probably thinking "yawn - as if you would actually cut my ear with a pair of scissors", Andrew decided to squeeze a bit harder. To his dismay, the scissor blades actually met with a resounding click and a steady trickle of blood on to Mario's crisp white school shirt.
What I remember most was the look of 30% concern, 20% pain and 50% contempt on Mario's face changing suddenly to 100% concern when Andrew guiltily handed him a used tissue.