Place it at the end of a montage of delays or excuses, as the turning point before the action finally begins, then cut straight to Kids Cheering for the payoff once everyone gets moving.
このサウンドについて
This is a short French voice clip, lasting about three and a half seconds, in which a speaker delivers the blunt idiom 'et on se sort les doigts du cul' with a firm, impatient tone. It feels direct, teasing and motivating, like a nudge to stop dawdling and start work. The delivery is punchy and conversational, making the familiar expression land as a playful scolding.