Related Clues:

• __ rule
• Witty bit
• Prankster's bit
• It's a joke
• Short joke
• Choke or joke
• Mocking remark
• Respond to a really bad joke, maybe
• With 29-Down, 'Do not discuss this' ban
• Brief joke
• "Eww!"
• "Serves you right!"
• Act mockingly
• "The Merry Old Land of Oz" opening words
• Restrain, in a way