Related Clues:

• Sound of boredom
• Punster's reward
• What a lame joke might elicit
• "Whatever" follower
• Sound of weariness
• "Why me?" reaction
• Sound of nostalgia
• Breathe loudly
• Unuttered 'Ah, me'
• Music to a punster's ears
• Sound of exasperation
• [I give up]
• Frustrated one's exhalation
• Charlie Brown's refrain
• Sound weary