Related Clues:

• Rebuff
• Post-delivery delivery
• Thwack
• Hit hard
• High-five sound
• Invitation to duel, perhaps
• Sound before 'Thanks, I needed that!'
• Pass rejection?
• Give a hand?
• Not-so-subtle no
• Kind of shot
• Hockey shot
• Unkind comment
• Duel prelude
• Doctor's action to a newborn's bottom