ATF Share definition Flag you girls and guys have hear of atm (ASS TO MOUTH) well ATF mean ASS TO FACE JANE DOE: hey babe I wanna give u ATF? Is that kewlJohn Doe: sure babe I love ATF anyways ATF by srh4life April 22, 2010 0 0 Get merch Get the ATF mug. Buy Now — $32.95 See more merch