Related Clues:

• Funny story
• Sound of mirth
• Piece of humour
• Sound of merriment
• *Stand-up's delivery
• Expression of amusement
• Twitter, e.g
• It might begin, "Knock knock"
• Routine part
• Comic's delivery
• Routine element
• It often takes place in a bar
• One-liner, e.g
• It's bad when nobody gets it
• Knee-slapper, e.g