TFMKYFO Share definition Flag That's for me to know and you to FUCK OFF....or 'find out', if one's a Mormon or SST some such thing. Q: Have you ever slept with another girl?A: TFMKYFO. TFMKYFO by nom de plumb June 27, 2009 0 0 Get merch Get the TFMKYFO mug. Buy Now — $32.95 See more merch
