Possible Clues:

• "What were they thinking" gesture
• Gesture akin to "How embarrassing!"
• [D'oh!]
• *Nonverbal alternative to “How embarrassing!”
• (I can't believe I did that!)
• Unspoken expression of exasperation
• [I'm such an idiot!]
• [Doh!]
• Nonverbal groan
• [I can't believe that just happened!]