There’s something quite fascinating about the way in which a football derby brings out the most tribalistic side of a football fan, regardless of the circumstances in which the game is played.

A League Cup quarter-final between Arsenal and Tottenham is no different.

It causes grown men to hurl abuse at a ball boy for simply doing his job. It seems to give people the excuse to launch a tirade of expletives towards people who, under any other circumstance, would be considered friends.