Possible to get stuck in a room?

[Destron]

Is it possible to get stuck in a room? In the "Portal English.GCF" file, there are several GLaDoS dialogs that are like "Even though this is no fault of the Aperture Science Center, you have somehow managed to trap yourself in Test Chamber <number>. A complimentary escape lift has been activated for your convenience."

Anybody know anything about this?
I'm going to go see if I can get stuck. :cheese:

 

[Orisit]

This happens if you are in a room with a button but portaled the required box somewhere else. Says so on the commentary.

 

[Nitre]

Yeah, on the advanced chamber with the companion ball at the end if you roll the ball down the stairs while standing on a button, jump off the button when the ball is in between the doors, jump into the room, remove ball from door. Then that comes up.