Related Clues:

• The joke is it's such a conversation-stopper
• Funny how either way it puts an end to conversation
• Funny sort of way to stop talking
• The sort of joke that's a conversation-stopper
• Either way, a conversation-stopper
• "A man walks into a bar" story, often
• A good one is cracked
• Funny line
• It may begin with "Knock knock"
• Conversation stopper
• Monologue bit
• Jokey sort of gift
• Bit of funny business
• Funny story
• Piece of humour