On the subject of words like this-I read that while s*** is a "naughty" word now, up until at least the 18th century in Britain it was acceptable in conversation, along with it's past tense, shat. The example used for the usage of it was "She reacted to my statement as though a dog had shat upon the floor".
I still use the word shat for the other word in the past tense, as in "The cat shat yet again. Now he's telling us." We can tell by his different tones what he's done. Crapulous Cat. Now that's good, too.