The phrase is Spanish slang built around el gallo, the rooster, and la cago, a vulgar way of saying someone messed up, so the line is usually understood as a crude, funny verdict on a blunder. Its exact recording origin is unclear, but the clip circulates online as a short soundboard reaction. Spanish-speaking creators reuse it in chats, edits and short videos because the meaning is clear from tone alone, and the short length makes it easy to layer over fails without explaining the joke beforehand for viewers.