The creepy image was shared on Reddit

What fourth friend?

The baffling snap supposedly has a simple explanation

If you can find these lizards, you've probably got eagle-eyed vision

It's seriously messed with people's minds

Count the women and then count their legs

Cancel the opticians and try this instead, you may as well

The hidden detail in the Halloween poster makes the movie all the more creepy

I have no idea where those snakes are

See if you can find it

Snipers, it's time to get your goggles on and spot the dog

Ever wanted to know something about yourself? Try this test

What do you notice first?

Yup, here's another eye test, except it's about 1000x harder

Did you spot it?

It's right in front of your eyes, but can you spot it?

Have you figured it out yet?

There's six women in this picture, but not enough pairs of legs...

A woman who lost her engagement ring asked the internet to help her find it

It's said an optical illusion may have played a hand