The line comes from Shenmue, Sega's 1999 Dreamcast adventure game created by Yu Suzuki and following martial artist Ryo Hazuki. The game's earnest, slightly stiff English dub became famous online, and short voice clips were pulled from its dialogue and shared as reaction sounds. This particular line survived because the phrase is universally understood and the tired delivery fits almost any frustrating situation. It now circulates on gaming soundboards and in edited clips alongside other classic game reactions, used whenever disbelief is the whole joke.
About this sound
A frustrated voice line from Shenmue where the character says you've got to be kidding, used as a reaction to unbelievable or annoying moments online.
This is a short spoken line delivered in flat, exasperated disbelief, with the words you've got to be kidding stretched just enough to let the frustration sink in. The delivery is deadpan rather than shouted, which makes it feel more tired than angry, like the speaker has seen this nonsense before and cannot believe it is happening again. That weary tone is why it lands so well over gameplay fails, bad luck clips and real life annoyances. It instantly tells the viewer the moment is absurd without needing any extra explanation or setup from the creator.