C1977 Let's Go Home

Two street hooligans were fighting. One of them had a stick in his hand, and he ferociously moved it towards the other, raising it high up and was about to smash down, when the other suddenly pointed at him and said: "Hey, there's someone behind you!"

The lackey with the stick would instinctively be stunned and turn around to take a look.

However, there was no one behind him