To know you shouldn't use these phrases, you need to know the context. Therefore, by not using these words, you're reminded of the context. Any time somebody n

To know you shouldn't use these phrases, you need to know the context. Therefore, by not using these words, you're reminded of the context. Any time somebody notices you substituting a phrase and they know why, they will be reminded of the context. Like all self-censorship, it immerses the speaker in the truth while they trip overthemselves trying not to say that thing. It's like saying, "Don't think about elephants." Now everybody is thinking about it.