A black squirrel has become an Internet sensation after footage of it repeatedly fainting was uploaded to YouTube.

The video titled "Tippy the Fainting Squirrel" shows the squirrel appearing to eat a nut while standing, only to suddenly freeze, tip over for a few seconds, stand back up and start eating again, The Huffington Post reported.

The short clip with no information was posted on Nov. 25 by a YouTube user named Honor Via.

It's sparked an online crusade among social media users to find out why Tippy is so, well tippy.

Diagnoses include everything from fermented berries (drunkenness) to narcolepsy and even forms of myotonia.

Watch the video below: