CMTF Share definition Flag Can’t Muster The Fucks. Used when you not only don’t have the energy to argue about it, but you don’t even care enough to spell out why. I mean, I’d explain why that comment was racist and also a non-sequitur, but like...CMTF. CMTF by userclone March 23, 2021 0 0 Get merch Get the CMTF mug. Buy Now — $32.95 See more merch