About ten or twelve years ago I was in town with the kids watching some of the "street theatre" that goes along with the Edinburgh festival. First thing I know, the chain saw juggling guy says "you look like a good sport" and drags me into the middle of a circle of about 50 people. Not wanting to look like a kill-joy in front of the kids (my default setting) I went along with it. What a mistake to make! Next thing I knew I was lying flat on my back on the pavement having my outline traced on the flag stones, with a chain saw buzzing an inch from my ear. I've been very wary of dodgy-looking geezers with piercings and tattoos ever since...