"# Contains obscenity, vulgarity, profanity or is sexually explicit.
Bypassing obscenity or filtering it by using letter, number, or character combinations is unacceptable as well. If you feel you absolutely need to vent, do it privately, do it elsewhere, or just learn some self-control."
How does this not apply to "WTF?" It apparently does not as a search for that term returns 13 pages of results.
I'm just asking because it is counter-intuitive. Are abbreviations allowed? Is this an exception to the rule or does it actually have an acceptable expansion that means the same as the unacceptable one?