Client: I need to make next week’s meeting for mid-morning, preferably close to 10.

Me: Ok, I can do that. I have that time frame available available on Monday and Tuesday. I have a prior commitment each week on Thursdays, so that day is out. Which day works best for you?

Client: Can I do Thursday next week?

Me: …No.

Client: Why not?

Me: ….

For the record, the client was NOT trying to be funny, as I was hoping. He truly thought we could still work on Thursday.

Source: Clients from Hell