A asks B for a glass of hot water.
B gives A a glass of cold water.
A asks B again for a glass of hot water.
B says, "You asked for water. I gave you water. You are making what must be an intentional error."
A and the onlookers fall on the floor laughing.
Hey.
That’s pretty good!
With a little practice, you could be quite polished indeed, at this.
Don’t know that it holds any currency for accuracy but it’s quite catchy.