Why does everyone pose for pictures in front of this sign?

The highway that runs next to Chernobyl is known as the ExtraTesticle Highway.

"Dad, it's getting a little hot in this mask. Can you just take the damn picture so we can get back in the air conditioned mini-van? Dad, really... I feel... I think I'm about to..." Thunk!

upon seeing this photo authorities quickly captured the illegal alien and deported him.

It's evidence like this that shut down Project Bluebook for good.