Patter
Patter is a prepared and practiced speech that is designed to produce a desired response from its audience. Examples of occupations with a patter might include the auctioneer, salesperson, dance caller, magician, or comedian. The term may have been a colloquial shortening of "Pater Noster", or the Lord's Prayer, and may have referred to the practice of mouthing or mumbling prayers quickly and mechanically. From this, it became a slang word for the secret and equally incomprehensible mutterings of a cant language used by beggars, thieves, fences, etc., and then the fluent plausible talk that a cheap-jack employs to pass off his goods. Many illusionists, e.g., card magicians, use patter both to enhance the show and to distract the attention of the spectators.