The clip comes from Hasan Piker, the Twitch streamer known as HasanAbi, whose political commentary streams regularly produce short quotable reactions that fans clip and share. Weaselly little liar dude spread as a soundboard and edit staple because the insult is specific enough to feel personal but broad enough to aim at almost anyone. It is now reused across gaming, debate, and reaction videos whenever a creator wants a quick, funny way to brand someone as dishonest without pausing the flow of the video.