This line comes from Battle for Dream Island, an animated web series built around competing objects, and it is heard in the show's fifth episode from the Announcer. Fans began clipping short, quotable lines from the series for edits, reaction videos and soundboards, where brief absurd phrases travel well on their own. The gloop gloop doot doot line fits that pattern perfectly: it is instantly recognisable to viewers who know the show, yet strange enough to amuse newcomers. Its one-second length has kept it useful for quick jokes and fast-paced fan content.