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1.
SOF
Special Operations Forces. Used as a blanket term for specialized military teams which conduct unconventional operations.
The "S" in the name of the SCAR series of rifles stands for SOF, or Special Operations Forces, the kind of unit it's meant to be used by.
by Wenzelhummel March 08, 2009
 
2.
sof
Smile on face. Rarely does one "laugh out loud." They usually just have a smile on their face.
Bob: LELELELELELE
Shaniqua: sof
by Andrew and Dizzle December 21, 2004
 
3.
sof
Sof (verb) - To bark annoyingly in a high-pitched Sof! sound in order to show appreciation of a cutie. Often used with "up"
I sofed that hot girl up as she walked down the hallway.
by Bubu The Slave Monkey May 19, 2005
 
4.
SOF
SOF: Short for Soldier Of Fortune
also
SOFII
Classic FPScreated by Raven Soft
by DarkShadow September 10, 2004
 
5.
sof
where LOL stands for Laugh Out Loud
and ROFL stands for Roll On Floor Laughing

introducing SOF:
SOF stands for Smile On Face

people use LOL and ROFL even though they may not actually be laughing or rolling on the floor. instead we sit there with a smile on our face because it was a humorous comment but not enough to induce laughter.
(on an IM or BBM or SMS convo)

dave: yo man i heard a great one today

mord: go for it bro

Dave: why did the chicken cross the road?

mord: why?

Dave: to get to the other side

mord: SOF

Dave: what, only an SOF, i LOL'd so hard

mord: sorry bro, it was only SOFworthy
by sirmordalot December 05, 2009
 
6.
SOF
shit on floor; shit on face; a sexual act for copraphiliacs
I was surprised when she told me she liked to SOF.
by Stewart Gatz November 20, 2009
 
7.
SoF
Statement of Faith
That sounds like a solid Christian ministry, but I need to read their SoF before deciding.
by Sinner Saved By Grace October 20, 2011