What does bum brigade mean?

bum brigade meaning in Urban Dictionary

A large number of people of the homeless persuasion collecting collectively within one location. They could frequently be viewed massing by bridges or wherever there are cardboard containers can be found. Typically travelling in packs, when you see one member of this brigade you can typically get the remainder. Markings include levels upon levels of winter coats, which help in escape when confronted by predators by creating scores of confusion, similar to zebra stripes.