Riddle me this:
A man walks into a bar.
He asks the waiter for a glass of water.
The waiter grabs his gun from behind the bar, points it at the man and says, ‘Go away!’
The man says ‘Thank you’, and leaves the bar without the glass of water he asked for.
Why did the waiter pull a gun on the man, and why did the man thank the waiter and leave the bar without getting any water?