"Signs display the text "OBEY" while Reality Vision is equipped. This is a reference to the movie They Live."
I don't have enough time to make a good thumbnail so here's an image from the official Wiki.
Other search terms: April fools C: - Standing OBEY Sign - Wall OBEY Sign - Standing Sign - Wall Sign
1. Click on the papercraft design image.
2. Make sure it has not been resized by your browser (you might need to click the image again).
3. Print using your browser's Print function.