f Share definition Flag What you type in to your computer when you want to go to Facebook, but your too much of a lazy fuck to type the entire thing in. Oldie: Go to www.Facebook.com Millennial: This is 2017, just type in f f by CallMeMrSir March 2, 2017 0 0 Get merch Get the f mug. Buy Now — $32.95 See more merch