ITFM Share definition Flag Im The Fucking Man, no one messes with you, you start fights and kick ass all the time, you also smoke weed, drink, and have sex all day. woman: who r u?man: ITFM! ITFM by The Real ITFM maker February 18, 2010 0 0 Get merch Get the ITFM mug. Buy Now — $32.95 See more merch