The phrase comes from LeonardoLimaLive, a Twitch streamer whose live clips circulate in Portuguese meme and soundboard communities. Eu sou PDC is shared less as a full scene and more as a portable catchphrase, detached from its original broadcast and reused wherever a short self introduction fits. Its spread follows the usual Twitch pattern of clipped speech becoming a reaction sound, helped by tags linking it to pranks, trolling and suspicious moments, and by its two second length making it easy to repeat.