Listed as a free sound effect by Thiago's Efeitos Sonoros, this tuc clip spread through meme soundboards under the simple name tucmeme, after the Portuguese word for the short knock it imitates. Its tiny length made it easy to share, loop in edits, and trigger repeatedly on soundboards without overwhelming a video. Online, it settled into the same toolbox as other one-hit meme punctuation sounds, used less as a standalone joke and more as a quick accent that creators can drop anywhere and viewers instantly understand.