Particularly when the ceiling drops from being about 20ft high to about 6ft high.  Even worse if it happens to be in a narrow passageway…  in the dark… and the ceiling is painted black.  It would probably have still been okay except that I’m about 6'4″.

Theatre’s are dangerous places I tell you.  Particularly when the stage manager thinks that the dark, narrow passageway with the dangerous roof (and the power switch for the sound system at the end of it) is the ideal place to stuff all the props.  I now have a rather large lump on my head.