Related Clues:

• 'My b'
• Nothing to repeat, I should add -- oh dear!
• (Facepalm)
• Hand-to-head cry
• Oaf's exclamation
• Holler from Homer
• Exclamation on making a minor mistake
• Reaction to a trip
• Shout from Homer Simpson
• Grunt often heard by Marge
• "Didn't mean to drop that!"
• "Gah!"
• "I'm so stupid!"
• Sound of clumsiness
• Old, old rider: I just fell off?