The sound comes from the entrance theme long associated with Shane McMahon in WWE, where the money chant played as he walked to the ring in a suit, often showering the crowd with fake bills. Clips of that entrance spread on YouTube and later in short form edits, and the hook escaped wrestling altogether. It became a reusable audio cue for anyone acting rich, winning a bet, getting paid or making an over the top arrival, which keeps it circulating far beyond wrestling fans.