Related Clues:

• Word with a Homer head-slap
• Goof-y sound?
• 'I'm such a klutz!'
• 'How dumb of me!'
• "Oh no, stupid me!"
• "That was stupid of me!"
• [Facepalm]
• Plate dropper's cry
• Comment after a spill
• 'I'm such a moron!'
• "I'm such a moron!"
• Homer Simpson's syllable
• Cry from one who's all thumbs
• 'How stupid am I?!'
• "How stupid am I?!"