The exact origin of this clip is unknown: it circulates on user-run soundboards as a short Portuguese-language meme, and the identity of the voice behind it is unverified. Its humor comes from the word itself, since gás is slang for a fart in Brazil, which gives the shout its prank-like charge. It spread the way most meme audio does, by being dropped into reaction videos and short skits where a sudden burst of volume sells the joke. Like other shouted meme clips, it works because the delivery is bigger than the words.