Sometimes, we can find ourselves coming across something perfectly normal, but it's presented to us in such a way that our brain panics for a second.
For instance, when a group of friends is goofing off and giving each other piggy back rides, it's surprisingly easy to lose track of how many legs are involved in the whole proceeding and they can start to look like one big human pretzel if they're close together.
And although our brains can eventually force us to unsee what we think is going on, some pictures are accidentally mind-boggling enough that it needs a little help.