Hide behind the nearest chair or pinup board.
Fall to the ground fast asleep, or if this is inconvenient, gently lean back against the pin-up board and doze off.
Prepare in advance and dress in a color similar to the site model or surrounding furniture. Then, in your moment of crisis, stay very still and make no sound.
10. Postmodern simulation
Leaf through your sketchbook and then look up and say, “I’m sorry, that’s not in the script. What page are you on?”