If you need any proof that mankind is regressing as a species then, well, you probably need to pay more attention to the world. Take a look at these signs for instance, compiled by Bored Panda. They shouldn't need to exist. But they do. Why? Because humans are getting stupider, that's why. Well, either that or sign-makers are getting funnier. Perhaps it's a bit of both. Who knows. Whatever the truth of the matter, all we know is that they're pretty funny. And as long as we have our sense of humor then there is surely hope for mankind. Although Darwin might disagree.

Seen any similar signs? Then add them to the list below and don't forget to vote for your favorite! (h/t)