Possible Clues:

• One might maintain a bit of hair going the wrong way
• State firmly and positively
• Claim that one can't go wrong with this, by the sound of it
• Say you hear it's a sure thing
• Claim that this is a sure thing, by the sound of it
• Say it's so
• Say it's a lock-up
• Insist upon a sure thing for the auditor
• Insist on getting a lock-up
• Say it's a good thing rain's coming through