It's an old article, from Jan 28, 2009, but it's still very funny.
A hacker (or some hackers) hacked (what else) into road signs normally warning of a detour and put in five different messages. Two of them being, "Zombie Apocolpyse! Run!" and "Nazi Zombies!" They were not caught, as far as I know. And as childish as a prank as it is... It is an awesome prank.
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I think that someone has a little too much time on their hands. At least the zombies will show them the detour
If I saw this sign, I'd turn around and go home. I hate zombies... But good prank.
haha that is a pretty awesome prank. I wonder how they were able to do that though.