If something was completely unbelieveable/inconceivable, sometiems someone will exclaim "Sif!", a word used in internet circles. This word could be used when describing the situation of when the exclamation occured.
by KinGAleX March 21, 2005
Secret Internet Fatty.
The SIF is quite adept at hiding his or her fat on the Internet. Usually a LiveJournal or MySpace user, they use Photoshop, high-constrast photos, and strategic camera angles to appear thinner.
The SIF is quite adept at hiding his or her fat on the Internet. Usually a LiveJournal or MySpace user, they use Photoshop, high-constrast photos, and strategic camera angles to appear thinner.
by indiefocker January 23, 2005
by smol_child June 04, 2018
by jenFACE March 05, 2006
SIF is an acronym that stands for Simple, Informative, Factual. Many people consider the SIF philosophy as their consistent state of mind. SIF can be applied in any field, be it practical, creative, or social.
Teacher: "Are you applying SIF on your essay?"
Student: "Yes, of course. That's why I'm so successful."
Student: "Yes, of course. That's why I'm so successful."
by Pootispenser April 06, 2017
1. Secret Internet Fatty; 2. Any person who takes flattering photos of themselves to hide their bulging fat rolls and dosn't put up a disclamer to those who seem to be ... interested.
"So I met this girl on myspace right. We talked for weeks and figured it was time to hang out and get a cup of coffee. Oh man, I walked in and took one look at her ... yelled SIF and then promptly left. It was horrid"
by detroitgoth December 08, 2006
by mjisagenius July 17, 2005