First off, love the question. Whether the asker knows it or not, this inquiry is a real test of search engine optimization theory, and it makes perfect sense why one would voice it. (And truthfully, as someone who has swear words in their own business website, I wanted to know the answer myself.)

Unfortunately, there isn't really a clear one out there. Even though Google and the other B-level search engines don't have an official stance on using profane language as it pertains to search rankings, I still recommend exercising caution. Thanks to heavy use of filtering by sites like SafeSearch and such, webmasters will find that their content is indexed far less often than "cleaner" websites.

Look fam, I get it. Sometimes you just need to cuss. I do it all the time. As far as your brand marketing is concerned though, my recommendation is to do your best to keep it clean – if for nothing else, so you can give your website as much visibility as possible throughout the search engines.