Coins dropping is a classic foley effect built from real metal coins recorded hitting a solid surface, a staple of royalty free sound libraries including collections credited to SoundJay. Editors have long used coin sounds to represent currency in cartoons, games and advertisements, and the same recording style spread online through meme edits and soundboards. Its association with arcades, slot machines and video game rewards keeps it instantly readable, even when viewers use it ironically for tiny payments or losing money in a skit.