Related Clues:

• "You're dreaming"
• Slangy denial, and a hint to 20-, 29-, 46- and 56-Across
• "Not a chance"
• 'ÔFraid not'
• "Won't do it"
• What ''quasi-'' means
• 'Clueless' phrase
• A small bit at the start of 23 down? Yeah, right!
• Leaders all sign important findings? Yeah, right!
• 'Like that's gonna happen'
• Valley girl's 'no'
• ''Thats what you think!''
• 'Not gonna happen!'
• "Oh, sure"
• Answer from school institute to loud music? Yeah, right!