Possible Clues:

• 'You don't think I will?!'
• 'You think I won't try that?!'
• Comment after 'You think I'm chicken?'
• "You don't think I'll do it, do you?!"
• Cocky challenge
• 'You think I won't!'
• Response to 'You wouldn't do that'
• "I'm not a chicken!"
• “Think I’m too yellow?”
• Risk-taker's challenge