The word ahem has long been written in comics, scripts and subtitles to show someone clearing their throat to get attention, and the sound itself is a everyday human gesture rather than a line from one film or show. Online, short clips of the noise became a handy shorthand for awkwardness, disapproval or a polite interruption, especially in reaction videos, comedy edits and short-form content. Because almost everyone recognises it instantly, it still works without explanation, cutting through a scene faster than a spoken joke.