"What on earth is that counting?" asked my friend Anthony as we passed the high security mental health unit in rural London
I could just about hear it...

"17...17 ...17...17...17..."

Tony was too curious to resist, he rushed at the fence and tried to jump and see over it but it was much too high so he found a small hole in the wooden panels and looked through it...

He jumped back clutching his face in agony, "Some bastard's poked me in the eye with a sharp stick!"

"18...18...18...18...18..." came the sound from inside the walls...