There is a moment in Anna Breckon and Nat Randall's play Set Piece when Holly (played by Randall) walks into the audience's view wearing a glass strap-on dildo.
Some parts of the audience started laughing when they saw her. Others were confused that people around them were laughing; they had been watching two characters sharing a tender moment in bed together on screen.
It's an example of the different ways audiences may experience what has been described as "cine-theatre": the blending of live performance with filmmaking on stage.