For a year I had the task (cold and miserable) of flying around with a 25 000 square foot banner slung under the helo. Bimbling round the Glasgow zone one Saturday advertising a Sunday newspaper a BA737 pilot was warned of our presence. Everybody else had seen us and commented about us. The 737 pilot couldn't see us. Instantly ATC came up with "How do you keep a medical with eyesight that bad?"
One of AlanM's colleagues caught me at a slightly non-concentrating moment one day with "Are you lost again? or just making the route up as you go?"
VH