Lol.
Customer: hello there, are you a window cleaner?
Shiner: looks down at his water fed pole and across at his newly sign written van Yes love, I'm a window cleaner.
Customer: Great! I urgently need a window cleaner, our house goes up for sale tomorrow and we are getting photos taken, the windows really need a good seeing to.
Shiner: Sorry, I'd love to give you a good seeing to but I only clean windows that aren't dirty.