[dude]

Es ist zu befuerchten, dass der Ausdruck "HTFU" auch Deutschland erreichen wird.

Vorab daher ein guter Kommentar (gaklaut auf slowtwitch.com):

"The term seems to originate with a few individuals of rather young age who have discovered that you can accomplish quite amazing things with mental toughness. They believe this discovery is so ground breaking that it must be shared with the rest of the world.
They seem unaware that most of us know this already but do not have a need to broadcast it.
It also serves as a ready response to other peoples problems, e.g. “I get a searing pain in my left leg after 80 miles on the bike”, answer: H**U
By using the term, they reduce the problem to one of lacking toughness in the questioner while establishing their own toughness.
It also is a gratuitous use of profanity, even by implication, but I will admit my lack of appreciation of the sophisticated nature of modern culture probably disqualifies me.
Having long time ago been of a similar mindset, I have some sympathy for them. Fortunately, I learned several things at government expense. One, I wasn’t half as tough as I thought I was, and two, the really tough ones never boast about it.
So if the term works for anyone, great, but do the rest of us a favor and please keep it to yourself."