Realtors often mistakenly refer to this as a "toilet room". It's the small enclosed space inside a larger bathroom where the throne is located. It has to have a door, which is closed during #2 operations, but not necessarily on #1 operations.
Jane: I love this house, the only issue is that the master bath has no poopatoruim.
Realtor: Poopatorium? Really?! I consider myself schooled!
When an individual has spent a ridiculously extended amount of time in the bathroom. Specifically, when they are using the extended time to avoid compleating a task, or to get an extra paid break at work.
"Feliciahas been in the bathroom for, like, 45 minutes. Either she is dead, or she is on a poopcation."