1. A person who uses obscenities, vulgarities, or profanities in their speech. Used especially in reference to a child or as a childish rebuke to an adult. Hey, you little latrine lips! If I hear you speaking like that around your grandmother again, you're going to be grounded for a week!
2. The use of such language Well, there's no need for the latrine lips, Rick. You could have just said "no" like a civilized person.
latrine lips(ləˈtrin ˈlɪps)
n. a person who uses dirty language. Hey, latrine lips! Cool it!