When I was at university, in the mid 70's, there was one week when student pranks were expected. I had the good fortune to be in a group of people which included a man with a bent for pranks, executed with military precision. He organised about 10 people to act as lookouts at various points so that 2 others could paint two little strokes of paint on a billboard sign which is lit up and visible for at least half a mile down a long street.

We have a pest control company called Flick and their billboard sign was just that one big word with letters at least 3 feet high. The painting squad just joined up the bottom of the "l" with the bottom of the "i" and joined up the dot of the "i" to its vertical stroke, making the naughty "f" word. It was there for at least 2 weeks. I don't think most people even looked at the sign because it had been there, unchanged, in the same place for decades. I still laugh about that.

Helen