thumb|A video of a person snapping their fingers.thumb|Alternative snapping techniqueTo snap one's fingers: to make a snapping sound often by pressing the thumb and an opposing finger of the same hand together and suddenly releasing the grip so that the finger hits against the palm. Alternatively, by bringing the index finger quickly down onto the middle finger and thumb, thereby creating the same sound
Done, performed, made, executed, carried through, or the like, quickly and without deliberation; as, a snap judgment or decision; a snap political convention