Originally Posted by ozstamps
I have no idea if YOB is a term widely used in Canada but a reference to any dictionary of Australian slang might be instructive, if it is not.

YOB=
It has become a kind of shorthand for a form of behaviour that everyone recognises instantly. Rowdy groups of young people spill out of a pub, and then rampage through the streets, roughing up each other and anyone else unfortunate enough to cross their drunken path. This is what is often perceived as "yob culture". The words now have become a rallying cry for politicians in the law and order debate. But who, and what, are we really talking about?
The usual suspects include lager louts, soccer hooligans, and teenagers who hang out on street corners. In fact any young person who displays a disregard for orderly behaviour, and a disrespect for their elders, is likely to be labelled a yob.
While it may be identified with the young, yob culture is not confined to one age group, or indeed one class. It's a form of behaviour that has been observed among a wide range of social groups.
Restaurant owners say too many customers - including professionals like bankers and lawyers - indulge in drunken behaviour, and make racist and sexist remarks to waiters. It may once have been excused as high spirits, but yobbish behaviour has become a symbol for a decline in respect for law and order.
Copied from the BBC (of course)
Full article here. This may seem completely off topic but I'm sure there have been instances of YOB behavious in the MLL from time to time.