Related Clues:

• Have an outstanding liability
• Have chits
• Run a tab, say
• Assassin's order
• Show a deficit
• Have bills to pay
• Crack up
• Be in a hole
• Be threatened by sharks, say
• Knock dead, as a crowd
• The middle part of 46-Down
• Overwhelm with one-liners
• Attribute (to)
• Must repay
• Amuse to the max