wgaff Share definition Flag Stands for "Who Gives A Fuck Friday" on the Jason Ellis show on SirusXM radio. No fucks are given, ever on a friday. You want to talk about it babe? Nah, its WGAFF, Fuck off bitch wgaff by bigkevphilly November 4, 2011 0 0 Get merch Get the wgaff mug. Buy Now — $32.95 See more merch