There used to be a general internet forum taboo, involving any mention of a short moustachioed Austrian hell-bent on world domination, which would end up getting a thread locked shortly afterward.
There were even some form of odds placed, suggesting that the longer any particular 'heated' topic was debated, the likelyhood of the taboo being mentioned would increase.
We seem to have got past that, but.....
It seems the letters following F and V are the new taboo....