The credit card slam spread online as a short reaction meme, especially on TikTok, where creators use the sound of a card hitting a table to signal an impulsive purchase. Its appeal comes from how instantly recognisable the gesture is: no explanation is needed to understand that someone has just decided to spend money. As shopping, unboxing, and haul videos kept growing, the clip stayed useful because it fits almost any moment of giving in, from a sale to a limited drop.