Haha, never used that line before till now.
Cleaning a £25 4 weekly house and neighbour comes to the gate to enquire of a price. She live in the middle of two streets, so not quite on a street her self, apart from her drive gates. So its quite a nice house. I walk round (5min walk) to give her a price and explain i use pure water as she has just seen.
She then asks if it leaves the windows clean because when she cleans the windows (not with pole n tap water) they end up badly streaked and she showed me. Haha they were awful, perhaps worse than before she cleaned them.
So i had to say it, "I am a professional window cleaner" in addition asking her if her neighbour would pay me £25 a month to not clean her windows properly. "
Not judging but she was a cute Irish lady