Possible Clues:

• Use mouthwash
• Wash your mouth out with local drink
• Use Listerine, say
• Wash out the mouth audibly
• Wash your mouth out
• Use mouthwash, e.g
• Use mouthwash noisily
• Wash out throat
• If the rag was back with a broken leg, this isn't what you'd do for it
• Rinse throat with liquid without swallowing