Definitions by neucool

sof 

"smile on face". Because when instant messaging, most of the time you don't actually "laugh out loud" (lol), you just have a smile on your face.

lawllady121: should I wear socks?
forestcowsfall: you should always wear socks. they are great.
lawllady121L: sof

sof by neucool January 8, 2009