Ffrrttthhh Share definition Flag the sound that a cash machine makes as it counts the bills. often confused with the sound of shuffling cards, but it's different. That don't matter, all I hear is ffrrttthhh since that check came in Ffrrttthhh by ML229 October 20, 2021 0 0 Get merch Get the Ffrrttthhh mug. Buy Now — $32.95 See more merch