- Banned in China: This particular object should be banned due to its inappropriate content.
- Dangerous Forbidden Technique: You must not use your ability, for you will risk such a detrimental cost.
- Forbidden Fruit: You know it's forbidden, but you're gonna do it anyway due to its appeal.
- Forbidden Zone: This place is far too perilous to enter. Heroes only.
- He Who Must Not Be Heard: This person is not allowed to speak.
- He Who Must Not Be Seen: This person is not allowed to be shown.
- I Thought It Was Forbidden: I guess I was wrong.
- Sacred Cow
- The Scottish Trope
- Speak of the Devil