The predilection for homes (especially rowhomes) in and around the Baltimore area to be eqiupped with a toilet in the basement, but without a bathroom. Upon entering the basement a toilet is usually visible by itself sometimes even in the middle of the basement.
Example 1: In order to augment my income, I'm gonna rent out my basement. There is no shower, but it has a Baltimore Throne.
Example 2: If the cops raid the house, head to the basement and flush the dope down the Baltimore Throne.