The phrase comes from everyday Portuguese, where diablo is a borrowed form of devil used for emphasis, and online the clip has circulated mainly as a short reaction sound on meme soundboards and in Brazilian sharing circles. Because the wording is short and the delivery is so theatrical, it travels well outside Portuguese speaking posts and is reused for any moment framed as evil, cursed or impossibly unlucky. Its lasting appeal is simplicity, one panicked line that editors can drop onto images, gameplay or chat clips without any setup.
About this sound
E o diablo is a Portuguese meme sound of someone shouting it's the devil, used for shocked reactions, funny scares and dramatic reveals in edits.
The clip captures a loud, drawn out shout of the Portuguese phrase meaning it's the devil, delivered with exaggerated panic and disbelief. The voice rises sharply, stretching the final word so it lands like an alarm rather than a normal sentence. That over the top delivery is what makes it funny, because the reaction feels far bigger than whatever triggered it. Viewers instantly read it as shock, fear or mock horror even without speaking Portuguese, and the five second length lets the shout build, peak and echo before cutting away.