The first car on the subway when riding very late at night. This car is usually filled with hobos, winos, bums and an assortment of riff raff, who flop around and stink up the joint.
Bro1: "Here's the train, let's get on the first car, so we're close to the exit when we get off"
Train: "Toooot, chugga chugga chugga, screeeeeeee pishhhh"
Bro2: "No way bro, it's late at night, I don't want to ride in Hooverville, lets take a middle car, where the biddies at."