Euphemisms
Why have a few words become condemned? Words in themselves are just sounds – how have certain words become condemned? What will be the reason? The reason is that you have certain ideas about certain things. For example, if you are against sex, then all words connected with sex will be condemned. If you are against anything, then all words connected with it will be condemned. Words are not really condemned – the condemnation shows that you are condemning something else. If you are against sex, then even the word ‘sex’ is shocking. Then you cannot use that word – then you have to use euphemisms, you have to go roundabout.
-Osho, "Zen: The Path of Paradox, Vol 2, #2, Q3"