Related Clues:

• Fight-or-flight response generator
• Have the chutzpah
• Double or nothing, e.g.
• Take up the gauntlet
• Reason for an evacuation
• Call, e.g.
• Say 'You can't do that!' to, say
• Vegas stake
• Ticket window transaction
• Truth alternative?
• Challenge that may result in a prank call
• Nuclear ___
• Schoolyard pressure
• Game with a Ural territory
• Get into the pool?