Related Clues:

• '___ this time!'
• 'Yep' opposite
• 'Ain't happening'
• Yup's antonym
• Opposite of "yup"
• Word that's often contracted
• "Joking!"
• 'Psych!'
• 'Ready or ___ ...'
• "Kidding!"
• 'Not gonna happen'
• "Wayne's World" catchword
• SAT-taker's pencil
• 'Believe It or ___!'
• Opposite of 49-Across