in all North American cities and towns ( except Montreal, Toronto, Boston, NYC and San Francisco- suburbs not included), an offensive term for the public transit (bus, metro, tram, etc.) system
The reason the 5 cities mentioned above are excluded from the definition of proletariat transportation is because they have a well developed, in North American standards, public transit system.
A medical syndrome, affecting most often the proletarian class, in which people come home from work after a 9-5 shift, fall asleep until about 8:30-9:00 pm then do some chores, only to be back to bed by 10:30-11 pm and get up early the following morning.