As we've seen over the last few years, some weird phenomena can inspire some surprisingly passionate debate.
Not to re-ignite everything that's already been said about whether the dress is black and blue or white and gold or whether we hear "Yanni" or "Laurel," but they serve as perfect examples for how a little perceptive weirdness can heat things up.
Yet, when we're presented with something that is more stark and confronts us with how different it is, words can often fail us. We might find the right words to express how we felt about them later, but that's only because we couldn't stop thinking about them.
Some of these pics are cool and some are disturbing, but they'll all have us thinking about them.