The home of emos, goths, and assorted skinny jean wearers, Tumblr has long nurtured a skeleton obsession. As one 2014 Gawker piece observed, Doot's strength lies in its vagueness: it's up to whoever is posting it to add meaning and flesh it out.
Kitschy and poorly-animated (by today's standards, at least), today 'Doot' serves as a reminder of technologies past, but the meme can also convey something older, creepier and more human. The two-second animated clip appeared on YouTube in 2011, originally clipart in Microsoft's 'Movie Maker'. The early 2010s also birthed the 'skull trumpet' meme, often referred to simply as 'Doot'.