Related Clues:

• Cartoon cringe catchphrase
• Play-___ (modeling compound)
• *The fibre of the gomuti palm
• Outburst from Homer Simpson
• 'How silly of me!'
• 'I can't believe I just did that!'
• Play-___ (fun clay)
• 'Ya think?'
• Sound often heard after a slap
• 'I'm such a fool!'
• [Forehead slap]
• 'Thank you, Captain Obvious!'
• ''C'mon, that's too easy!''
• "I should have thought of that!"
• ''Silly me!''