Related Clues:

• Strap on a bridle
• Funny story
• Strap to control horse
• Horse's steering strap
• Control for horse
• A means of control
• Piece of humour
• Part of a harness
• Equestrian item
• Bridle control
• *Stand-up's delivery
• Old stage line?
• Free ___ (carte blanche)
• It might begin, "Knock knock"
• Routine part