Online, that's funny has become a go-to reaction sound for short-form videos, memes and edits where a spoken response feels more natural than a canned laugh or a dramatic sting. Creators use it to punctuate irony, sarcasm and everyday awkwardness, often pairing the line with a still image, a screenshot or a quick cut to a character's face. Its popularity endures because the phrase is instantly recognisable, easy to understand without context and short enough to reuse across formats, from TikTok-style clips to longer compilation videos.
About this sound
A short that's funny reaction sound used in memes and video edits online to answer a joke or an awkward moment with dry, understated humour.
This short clip captures a single spoken reaction, the words that's funny delivered in a flat, almost deadpan tone that lands as much through timing as through the words themselves. It is brief enough to drop into a cut without breaking the pace, yet clear enough for a viewer to catch the sarcasm or quiet amusement straight away. Because the delivery is understated rather than loud or exaggerated, it works as a knowing response to something absurd, awkward or unexpectedly ironic, letting the audience feel in on the joke without the edit having to explain it. The restraint is what makes it funny.
