Ard Mhacha,You may joke but I've seen it happen.
The "Hole in the Wall" Tavern by Waterloo Station, in the days when it was a right cider drinking hole.
BTW the pub seens in the film version of "Oliver" were filmed here which may give you some flavour of what it was like.
There was a group of drunken Irish singing the old rebel songs. Or trying to.
One of our company was a Scouse Prod', with 2 pints of snakebite inside him he starts on "The Sash"
We were lucky to get out alive.
Gareth