Rules, subsequent brawls must include at least one participant from the previous brawl, before he has time to sober up.
The world's longest-running bar-broom brawl started in a pub between Heathros Airport and a soccer pitch. It was the World Cup finals. Some-made a derogatory comment about the visiting team. Some-one threw a punch. Some one else threw a punch. A guy shoved his way towards the pub door as he raced to catch the Concorde. He drank a few drinks on the Concorde.
A New York City taxi-driver delivered him to a bar in an Irish neighbourhood of Brooklyn. As he ordered a beer, he made a comment about "Some drunken idiot of a Mick gave me this black eye."
Mayhem ensued.