Just wait till they experience the punchline.
I’m afraid you’re no longer welcome in this establishment, sir.
We received some complaints from the regulars.
Yes. On your last visit you announced to the entire bar that their “existence would end in a whirling maelstrom of teeth.”
Then you spent the next hour sitting in the corner and staring at everybody while quietly sobbing.
Oh… that. I think I was just joking around. I mean… probably?
Please don’t ever come back, sir.