Related Clues:

• See 19 Across
• ''Yippee!''
• Cry of joy
• Celebratory cry
• ''Don't hold your breath!''
• On the 31st of February
• Joyful cry
• ''Not a chance!''
• Rodeo rider's yell
• 'No way, no how!'
• 'Not on your life!'
• Cowpoke's holler
• Shout of joy
• 'When hell freezes over'
• Under no conditions