Les douzaines
From Plastic Tub
Les douzaines fr. 1. A kind of fancy way of making fun of someone else's mom, but in French; eng. "the dozens." 2. A notorious Marseilles street gang.
Extrapolation
Alexandre Dacusse modelled his adolescent band of ruffians on Les Douzaines, calling his group Le Petit Treize, literally, "The Little Thirteen."