by Jonathain April 19, 2015
Get the SFImug. The name of a crew referring to themselves as Stupid Fucking Idiots. See sficrew.tripod.com for more details.
Only an SFI would do something like that.
by SFI Squirrel December 9, 2008
Get the SFImug. A versatile acronym used in chat conversations. Commonly defined as "So Funny it's Scary!" or "So Funny I Screamed!"
Users frequently replace the final "S" with other letters such as "L" (So Funny I Laughed!) or "U" (So funny I urinated!)
As internet chatsters across the globe realize the amazing versatility of this acronym, it's only a matter of time before "LOL" becomes obsolete.
Users frequently replace the final "S" with other letters such as "L" (So Funny I Laughed!) or "U" (So funny I urinated!)
As internet chatsters across the globe realize the amazing versatility of this acronym, it's only a matter of time before "LOL" becomes obsolete.
Friend #1 - "That hair on your cheek is out of control!"
Hairy Cheeked Friend #2 - "SFIS!"
Friend #1 - "No really, you need to pluck it at once!"
Hairy Cheeked Friend #2 - "SFIU!"
Hairy Cheeked Friend #2 - "SFIS!"
Friend #1 - "No really, you need to pluck it at once!"
Hairy Cheeked Friend #2 - "SFIU!"
by SlaveToTheBean November 7, 2008
Get the SFISmug. 
by SpMc305 May 8, 2016
Get the Sfimug.