I remember as a child (aged 5-6) watched a documentary - about volcanic eruptions - with my older brother.

My brother decided to explain to me how serious and dangerous this is.

B: If you push your finger into the lava, it will instantly disappear!

I: And the whole hand, after how long will it disappear?

B is immediately.

Since then, and until 9-10 years old, I really wanted to become - a person invisible, well, at least partially.

Fortunately, the lava was not there.