The clip comes from Matta, known online as themattayahu, a League of Legends streamer on Twitch whose Portuguese outbursts are clipped by viewers for soundboards. The phrase mete o dedo no cu is a deliberately crude Brazilian expression, which is why this short shout travels beyond his regular audience as a shock reaction. Fans share it in chat communities and gaming edits where a familiar streamer voice adds recognition to the joke, and its two second length makes it easy to replay, send and insert into other videos.