Related Clues:

• Use your reflexes
• Not be deadpan
• Laugh, perhaps
• Be moved by a stimulus
• Do a double take, say
• Jerk or frown, e.g.
• Ooh and aah, say
• Show a response to something
• Show a response
• The ruddy deed that the editor may do
• Invest with you in there about to dine?
• One may respond this way and play it a second time, perhaps
• Play it again in response to this
• Play it again and make a trace of it
• Play it again, perhaps, to see how one may respond to it