Related Clues:

• [blech!]
• __ order
• Stand-up performance
• Handkerchief stuffed in the mouth, e.g.
• A muzzle - or a joke
• Stop the mouth with a joke
• Retch at the joke?
• A joke to muffle?
• Humorous anecdote or remark
• Unvarying, habitual procedure
• A palindromic muzzle
• Palindromic muxxle
• A palindromic joke or muzzle
• Palindromic muzzle
• Any procedure regularly followed