A guy got an optical illusion tattoo that makes it look like there's a huge hole in his arm

• There's a viral tattoo on Reddit that's designed as an optical illusion.
• It looks like an infinitely deep hole on someone's arm.
• It's far from the other optical illusion tattoo to go viral in the past few years.
• Other, similar ones take inspiration from classic works of art.

There' a viral tattoo on Reddit that looks like an infinitely deep hole — and it's freaky.

The optical illusion tattoo was posted to the Damnthatsinteresting subreddit, but it's not clear who the artist is.

Though it's drawn on a relatively flat surface, the tattoo looks like it has depth because of the progressively smaller rectangles that give it shape. It's an illusion similar to infinity mirrors, where a repeated surface looks progressively smaller until it seems to go on forever.

And it's not the only optical illusion tattoo. A few years ago on Reddit, someone posted a tattoo made by the illustrator Paul O'Rourke, which went viral on the site. It resembles a spiraling column surrounded by space. Really, it's just an arm.

Another optical illusion tattoo that went viral on Reddit a few months ago, was designed by the artist Pablo Garcia. It's called "Memento Mori."

It's a skull inked on a forefinger. When the finger is extended directly upwards, the skull appears distorted. When the finger points toward you, the skull looks normal.

It's an homage to the 1533 painting "The Ambassadors" by Hans Holbein, which features a similarly distorted skull in the foreground.

At a different angle, the skull looks normal.