OK there is a contest on BG. Submit your Halloween pics and you can vote for others. Get points too.
You will see the pic I previously posted and voted for 
Join the game.
Player Kill (PK) Contest: Which is the scariest？
The most popular wins!
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dam, i missed the OP’s pic :person_facepalming:
LoL…yep,amazing how the brain can flip directions like that
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Awww geesshh man….I got to see the pic. Was just someone dressed up like A BITCH !
I hear it’ll be a popular costume this Halloween. 
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Updated OP.
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I observe the pic a bit longer and I think its just two .gif of the same train with different directions combined together.
I tried to focus and make the train to keep going forward but doesn’t work. It keeps going forward and backwards on regulated time like strobe hahaa… so I don’t believe my brain can control that pic, LOL
It has to do where you look at in the image, look in the center it goes one way, look at the right edge and it goes the other.