Related Clues:

• 'Keep dreaming!'
• 'Don't even think about it!'
• "It can't be!"
• 'Zero chance!'
• "No way that's true!"
• "Forget it!" (and a clue to this puzzle's theme)
• "Dream on!"
• "Not possible"
• 'Ain't happening'
• 'That's too hard to believe...'
• "That's too hard to believe..."
• 'You gotta be kidding me!'
• 'That can't be true!'
• Out of the question - lacks route
• See 1 down