A Man walks into bar desperate for a drink of water?

Here is the full story...?

A man walks into a bar and asks for a glass of water.

The bartender pulls out a shotgun and points it at him.

The man says, thank you and leaves.

Why?

Answer:

The man had the hiccups, so he wanted a glass of water to cure them. The bartender pulled out a gun to scare him, therefore curing his hiccups!