Related Clues:

• "Sorry about that!"
• Homer's grunt
• Cry from 13-Across
• Omission statement?
• Reaction to an error
• Oh dear, that was careless!
• 'Silly me!'
• Homer output
• 'I just realized I messed up' outburst
• Remark of dismay
• Oh dear, that's a mistake!
• 'Sorry I broke your priceless Ming vase'
• Homer exclamation
• "How dumb of me!"
• 'My b!'