SHTF

Sh** Hits The Fan

As in, "Where are you going to be when the shit hits the fan?" as heard by the doomsday preparers, apocalypse believers, and zombie fans.

Online jargon, also known as text message shorthand, used in texting, online chat, instant messaging, email, blogs, and newsgroup postings, these types of abbreviations are also referred to as chat acronyms. 

For the largest list of Internet acronyms and text message jargon, click on "more info" below!
See also : WTSHTF  NSS  OSINTOT  
NetLingo Classification: Acronyms and Text Message

Updates
See more information about this term