Related Clues:

• ''Cross my heart''
• "All kidding aside"
• Order reinforcement
• Parental postscript
• Oil spillage in Tyne and Wear - it's the absolute truth!
• ''I swear!''
• Unequivocal statement
• "God's honest truth"
• 'True dat!'
• 'Cross my heart!'
• 'Dead serious!'
• ''It's the truth!''
• 'Seriously'
• "Scout's honor!"
• "That's the truth!"