That one was something to do with Patta, coming of age, bar Mitzvah, loss of virginity reaching five ft tall or something.
There was an earlier one for my 25th when we were repeatedly closed down by the police and by some teenage girls father from up the road whos daughter was upstairs somewhere with our next door neighbour. Must have been 150+ people at both of them in a 4 bedroom terrace.
The police gave up in the end and just asked us to keep everyone in the house.
Ah those were the days, i suspect that the foundry do in the broadfield may be a bit different.