At dva is a shortened form of the Russian counting phrase raz, dva, meaning one, two, used for generations to keep marching troops, gym classes and parade drills in time. The clipped pronunciation turns the count into a sharp command rather than a normal number. Short recordings of the chant later circulated on Russian language television clips, video edits and soundboards, where users lifted the few second call as a standalone effect. It remains popular because any group movement can be reframed as a formal drill in seconds.