Little did you know all of DC has a bladder problem.

Two tourist families enter metro car, 4 children, all under the age of 5 run wild.

Tourist Moms and Tourist Dad, scream at kids: "Get up off the floor and sit in your seat!"
Oldest boy: "Why, we like it on the floor!?"
Tourist Dad: "Because people pee on the floor, get up!"
Oldest boy: "OH, people pee on the floor! Can I pee on the floor? I want to pee on the floor!"
Tourist Dad: "No, just get up! Sit in your seat and NOT where people pee."

-Blue line train, direction of Franconia-Springfield