Ominous Signs That Mean Business

The world is big, and with it come a lot of threats. There's quickly rising water, bees, brain-eating amoebas, big holes and errant explosions to name a few. To name a few more, there are cliffs, electricity, angry biting monkeys, slippery cliffs, dangerous machinery and fires. So it makes sense we'd need a lot of spooky signs that say a lot with their creepiness.