"... that you take the pencil out of your bum and don't put another one there. You will hurt yourself"
"I won't, I want to write with my bum"
"YOu cannot write with your bum. Your pencils will get poo on them and you might make your bum bleed"
"I done a poo today so I won't get poo on them. ANd bums don't bleed"
"DS2. Do NOT put ANYTHING up your bum."
"O - kay...."