The tannoy in the corridor

The tannoy announces: THE CRAB AND THE FOX WILL COMMENCE SHORTLY, PLEASE MAKE YOUR WAY TO THE COURTYARD.

To the external door
The naked chubster with the CRAB mask sighs...

sitting in a corridor
They may return to a similar room, but never...

CRAB
/krab/ a crustacean, found chiefly on...