Mr. Solubility,
That is funny! I like tea but a cold brew in Texas goes down really easy. (After work, of course).

Seriously, Jared; my main sub-contractor will correct some one if they say; "are you a window washer"? "No, we are window CLEANERS", he says.
I say "We wash the window and also we clean it because after it is washed and rinsed it is clean when it dries; and when we scrub it with a scrubber and then squeegee it off it is also clean".
So, to me we are both; but I do describe the business I have as a "window cleaning" business.
I agree that what the customer calls us is OK. As long as we are good at what we do.
And I love the UK forums.
