It is saying that you can write with numerous items and that you can write ON numerous surfaces. For example:

1. you can write in pudding (with your finger, your spoon, etc.)

2. you can write with sticks or fingers in various substances: the mud, the earth (dirt), snow and sand

3. you can hold a sparkler up and pretend to write with it

4. you can write on a steamed-up window or mirror (with your fingers)

5. you can pretend to write with a bubble soap pen or marker

Does this make more sense now? Please let me know —

If your writing with pudding you could use most any object including your fingers, if using a stick you have to hold it of course with your fingers, using sparklers…again must be held with your fingers, writing on steamed up windows or mirrors…we always do this as adults and as kids with our fingers or our tongues (in winter that could get tough)LOL. The bubble soap markers got me for a moment, but when we took bubble bathes as kids we alsways made shapes and words using the bubbles!

So there you have it, fingers are related to all of them in some way or another! NYUK NYUK NYUK