On April 13, 2019 at 08:57, goldenzrule said...
I've done something sorta similar. When asked the question, I just stop them and ask if they know where their water main shut off valve is.
Way back, working in my first multi million dollar mansion, I was cutting into some VERY expensive wood walls for some inwall speakers when the homeowner's came into the room.
I made like I didn't notice, and said "Oh no!".
The clients wife was not happy. Especially after her husband started laughing....