Watch: Bizarre 'Rat Worm' Filmed

A strange piece of footage circulating online shows a nightmarish mystery creature that resembles some kind of horrifying cross between a rat and worm. The jaw-dropping video was taken by a British woman named Bex Deen who was aghast when she noticed the oddity seemingly slithering around on her backyard porch. She subsequently posted the footage online in the hopes that someone could identify the weird creature.

For those who may be understandably afraid to watch the unsettling video, the footage shows a strange creature that appears to be about five inches long and sports a tail which is nearly the same length. As Deen looks on in horror, wondering what the monstrous thing may be, the little beast proceeds to slither along the sideboards of her porch in an undulating fashion that is both riveting and repulsive at the same time. Remarkably, rather than whack the creature with a rolled up newspaper, she reportedly decided to let it live, saying "I let him slither off to join his alien friends wherever they may be."

As to what the weird creature may have been, the consensus online seems to be that it is an uncharacteristically-large rat-tailed maggot which, since Deen opted not to kill it, will likely transform into a drone fly at some point in the not-too-distant future. The puzzling appendage is, in fact, not a tail, but a breathing tube which the bug uses in the event that it winds up underwater. What would you do if you were in Deen's place and you encountered the creature in your backyard? Let us know at the Coast to Coast AM Facebook page.