I have read too many threads here, against my better judgement. It is like when you have a sore tongue and you keep running it over the sharp edge of your tooth even though it hurts, but you can't stop yourself doing it.
So, the other night, I had a sporn dream. I dreamt that I was walking down the street and there was a man wearing shorts whose knees were all covered in huge yellow lumps. And he started walking towards me and they all burst and ran down his legs.
I can hardly close my eyes now without visualising it and it's all your fault, you, you sporners you! 
Bet some of you would have loved that dream...