Chuis fatigué comes from everyday spoken French, where je suis is often shortened in casual speech, and the phrase has become a handy shorthand for being worn out. The x2 in the title signals the line is repeated, a common soundboard pattern that makes a simple reaction easier to loop and reuse. With no confirmed original recording or source work attached to this clip, its spread comes from relatable everyday use in French speaking chats, reaction posts and short edits rather than from a film, show or song.