As a simple fellow programmer, I don't want swear words in code I'm working on either? If it's in the code itself, you should be using better names. If it's in comments, I want information without extraneous modifiers. Not to mention, what one person thinks is an innocent swear might be considered very harsh by others.
There's just no good reason for swear words to be committed. You want to swear about the code, do it in a chat room or something.
What if you're writing swear word censoring/detecting software? Or maybe something less draconian, like your space game that has a Zork like parser, and needs to know that if the user says, "set the f'ing warp drive to f'ing max", that it should set the warp drive to max and not worry about the swear words.