The hazards of painting

'I nearly set fire to myself last night,' said Johnny fixing me with a penetrating gaze.
'Johnny! what have you been doing now?'  I replied aghast.
'Well, I was sitting in my chair studying a painting.'
'Which one?' I asked.
'I can't remember - but the thing is, my chair is at a perfect distance from the painting - everything looks glazed over - I like to look at a painting when it's slightly out of focus. Anyway, I was looking at the painting on the easel and smoking.  I saw the precise place on the painting for a small mark - a very insignificant mark, but the position was critical.  So, I focussed on this blurry spot - I didn't dare take my eyes off it, in case I lost the place - put my cigarette out, still keeping an eye on the spot see.  Then I stood up - still looking at the spot - took one stride and screamed with pain! What had happened was the end of the cigarette had dropped into the lap of the Thai  pants that I was wearing (voluminous and flammable),  I stood up, the cigarette end dropped onto the carpet, but the trousers were smouldering.  I instinctively dropped my trousers and jumped up and down on them to put the fire out - which was quite successful by the way.  The only damage I sustained was that pubic hair on the right hand side was burned.'

Well that's alright then.  I wonder if he made the mark after all that excitement.