I think that anyone with even a minimal interest in language should be easily fascinated by profanity. Seriously, the things that we can and should not say in different languages is fascinating.
Changing cultures makes this even more interesting. Swedes have an excellent grasp of English but their most common exposure to it is through popular culture. This means that we think of Americans as a group that uses a high level of profanity. It’s all very confusing for swedes when they get to the states and use the language they have assimilated only to find that they are considered to be using it rudely.
So far I have not been told my language is not fit for class, but I do tend to start all my new courses with a warning that I tend towards “salty” speech. Nothing they haven’t heard before, but maybe not used in this context.
Here is a supercut of every Motherfucker that Samuel L. Jackson has used in the movies… well he is still going strong so I guess this list is out of date.