Optical illusions. You people love 'em.
Whether Blake Lively's randomly posting them on her Instagram (check it out below) or you're desperately trying to tell apart pretzels and tiny dogs, you love to scramble your brains at every opportunity.
Now a Reddit user has posted a lovely picture of some boats and some grass and some OH MY GOD WHAT IS HAPPENING TO MY BRAIN SOMEONE HELP ME NOOOOOOOO
Why are the boats floating? Are they moving? Are they in the sea? Why do... what is... how do I... ARGHHHHH.
This is worse than that time a girl face swaped with a pretzel, and that was pretty bad. Can you work this out, or are we offically crazy? Answers on the back of a postcard, please (with some sweets, preferably. We're really not feeling ourselves right now).