Related Clues:

• It's so funny it leaves one speechless
• That's a funny sort of conversation-stopper
• 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
• Not the sort of thing a bull would do with its horn, by the sound of it
• The horned owl, by the sound of it
• The sort of joke that's a conversation-stopper
• Either way, a conversation-stopper
• What the unicorn is not able to do with its horn?
• Raucous cry
• Conversation stopper
• Razzing yell
• Jokey sort of gift
• Fourth word in the ladder