Who would have thought that one single "f" would cause such consternation among so many? Such a sensitive lot we have here. You guys are fighter pilots for crying out loud. You are the elite of the internet's elite. Don't let a single "f" cause you concern. I will be forced to take many of you off of my hero list and no longer respect you as the most awesomest awesome guys that are awesome.
Besides, this is not unlike all other internet posts that don't agree with your weak forum stomachs in that the timeless internet rule still applies, if you don't like his "f", he is not forcing you to read it. But wait, perhaps he IS forcing you to read it because, alas, once you have seen his "f" then you have read his "f". Brilliant!
I say don't PNG him, but promote him to the gold-plated platinum diamond encrusted lifetime member l33t, l33ter member because he has found a way to psychologically shoot down all of you with one single shot. Now that is an awesome internet fighter pilot!