A man walked into a pub and went straight towards the barman. He asked for a dirty martini from the barman. The barman thought something and then pulled out a pistol from a drawer. He aimed it directly at the man. Why did he do that?

Well Known Hiccups Riddle

The man who asked for the dirty martini was having hiccups which was evident when he asked for it. Thus, the barman pulled out a gun and aimed at him to give him a shock which ultimately cured his hiccups.