LRF

Little Rubber Feet

It refers to the plastic pads on the bottom of computer equipment. 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.  

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See also : FRED  smoke test  
NetLingo Classification: Acronyms and Text Message
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