Just finishing up a mid terraced property this morning when out comes the neighbour not looking very happy. "Excuse me, you've got water all over my windows." I was just about to apologise and offer to clean the affected window for her when I realised it had started raining. I stood back and looked at the front of her house, then said "All your windows are wet. It's raining." The look on her face as she realised what had happened was a picture.