FCSL Share definition Flag Stands for "fiscally conservative socially liberal." Precisely the group left out in the cold in the two-party system of the United States. Susan: George told me he didn't even vote in 2008! How could he!Megan: Well, he's a FCSL. FCSL by T-Baxx July 23, 2010 0 0 Get merch Get the FCSL mug. Buy Now — $32.95 See more merch
