Green’s Dictionary of Slang

S.F.C. n.

also s.f.c.
[abbr.; capitals and lower case letters are interchangeable]

(US black teen) San Francisco City or sucka-/sucker-free city.

[US]A. Newitz ‘Bay Area Sl.’ on Berkeley University Amer. Studies 102 Course Website 🌐 SFC – San Francisco City or Sucka Free City, depending on what kind of sucka you are.