Bill and Frank are in a bank waiting to be served, when suddenly armed robbers burst in.

Two of the robbers take the money from the tellers, while the other lines the customers, including Bill and Frank, up against a wall.

This third robber proceeds to take wallets, cash, watches and other valuables from the terrified customers.

All of a sudden Frank turns to Bill and says “Here take this”, as he stuffs something into his hand.

Without looking down, Bill says “What is it?”

Frank replies, “It’s that £50 I owe you.”