the actual person who does this is a boy in my year called BEN MCGHEE(haha).
kinda fat, bad tempered, ginger hair(we think it's a cat)
ben: *freaks* ARGG! waddles to board, frantically scrubs it, then chases the person round the room, hitting and shouting insults at them.
At this point the person would first punch the offending person, then rip the piece of paper off the wall, all the while muttering under his breath.
*chase ensues in which I sustain many flesh wounds*
me: ok ben calm yourself,..