I liked the tea analogy itself, for the same reasons as Pacific. I'm not keen on the length of it, and the way it is all worded, but perhaps that is also part of what makes it work.
I'm not sure about the bit that says 'if they say yes they want tea, but they don't drink it'...what is that about? Maybe misread signals or something like that. Or just that people can change their minds. Or warm up their own tea in the microwave if they want, when they want to. Without telling the person who made the tea. Oh yeah, there's a lot more we can get out of this!