The boy ran out of the apartment and hands behind him, ran to the bus stop, and his hands behind him.
The bus out the old, and the boy ran into the bus and hid behind it. Years I was probably 12-14, can't remember exactly.
In General, explanations of events I found, after talking with my mom we decided that the local Ghost decided to play pranks.
The signs of the activity of some domestic entities still occasionally occur in this apartment, though not so clearly for me.
It so happened that I spent the night in the apartment alone, parents had gone somewhere for the night.