1. In a public restroom
    Because shit can be too real and we all don't need to know
  2. In front of a trained parrot
    Because they could repeat it at another inappropriate time
  3. While speaking in front of children
    But some times children cussing is hilarious, and also they are another form or "a trained parrot"
  4. When trying to deliver a compliment to someone
    Like the phrase "I think you're good shit!" Now what's that suppose to mean