Related Clues:

• "Really!"
• ''And that's ___'' (''Believe you me'')
• "I kid you not"
• "I swear!"
• 'Honestly!'
• "I'll swear on a stack of Bibles!"
• "... on my honor"
• "Cross my heart"
• 'For reals!'
• "I kid you not!"
• "I'm not kidding!"
• 'I kid you not'
• "Honest to goodness!"
• 'Truly'
• Response to a skeptic