Take a close look at this photo… what did you notice first? At first glance, it might seem like something inappropriate, but don’t be fooled — your brain is playing tricks on you. These optical illusions are designed to mess with your mind and make you see things that aren’t really there.

So, what did YOU see first? Share your answer in the comments below and see if your friends see the same thing. And don’t forget to scroll carefully through the gallery — each image will challenge your brain in a different way!