You're lucky because I'm not exactly religious, otherwise people get offended on that particular one and raging shitstorms of epic proportions tend to happen.
Now there's a word I kinda miss in Croatian, it doesn't roll off the tongue as well as it does in English - shitstorm. Epic.
About defecation connected to copulation, that's actually a slight error from that blog. They're entirely different words with clearly defined boundaries of use. He used a slash there to make it known you can use either word in the same context, which will NOT yield the same meaning, but two different meanings, both being profane.