Answer: Looking at the direction of light and shadow of both, the answer is go 

The image is a humorous take on the classic optical illusion where the direction of movement of the girl and horse is ambiguous. The text adds a humorous twist by suggesting that the viewer should be cautious of being "scammed" by the image, implying that the illusion is tricking them into thinking they can determine the direction of movement.

The joke plays on the idea that optical illusions can be deceptive and that we should be careful not to be fooled by what we see.