Censored words?
 

I recently updated my signature and used F and W (combined, next to each other, like XY) to reference my flywheel. My change was blocked because I used a censored word! It took me a few edits before I could identify the censored "word". How is a two letter abbreviation for flywheel a censored word? I understand what F may mean. But W? Oh well....

Wad?

It's 2018, F W must have offended someone at some point and is now considered hate speech