The clip comes from a live broadcast by Leonardolimalive, a Twitch streamer whose streams are clipped and shared as short meme sounds. De calcinha is Portuguese and refers to wearing panties, which explains why the line is used as a teasing, slightly embarrassing punchline online. The moment spread through reposts of live clips where viewers isolate funny phrases and reuse them out of context for pranks and reactions. It stays popular in that small niche because the phrase is instantly recognizable to Portuguese speaking audiences and works without needing the full stream.