Related Clues:

• Part of WTF
• 'Let's get goin'!'
• 'You are so obviously lying to me'
• 'Aw, be a sport!'
• Incredulous reply
• 'You expect me to swallow that?'
• ''Say that again?''
• 'Excuse me?'
• "Let's get goin'!"
• 'Be a sport'
• 'Seriously?!'
• With 54-Down, start of a historic telegraph message
• 'Say that again?'
• Thaw out, eh?
• Eh?