I personally have no problem with mentioning a word, but there are certain words that I don't like to use. "I just took a shit" seems needlessly crude, but "I don't understand why 'shit' is considered offensive when 'poo' is not" is - to my mind at least - a case where the word is necessary to make the sentence easily readable. I could refer to it as "a four-character scatological noun", but that's rather clumsy.
In my case, the self-censorship is out of habit from other forums. And yes, Skewbrow, those were the words that I meant.