I have seen some picks that my friends do that.. How do you put a pik in top of another one?
If they are flat on one side, it's pretty easy. If not, you can cut them to balance on each other pretty easily with a sharp knife....and it'll still look "normal" so that people will think they are ordinary toothpicks.
It's photo editing,if you look at one of my pix,I did it too,if you want,I can do it for you,I only have 1 request in.
some cameras have an option with the camera that can do it. it all just depends on your type of camera