Why do furniture knock sometimes by themselves?

Question

I don't know if knock is the right word, but sometimes furniture sound like they are knocked for no reason. I've found that it happens very often when my mind thinks intensively. This happens to light bulbs as well. They do a "click" and it happens everytime my mind is very active. Also a few years ago I used to go at bed and think of my deceased cousin and eveytime I did that, the modem of my PC would knock. It happened everytime, so I've excluded it being a coincidence. Anyway, I think that it has to do with brain waves, but I'd like to hear your opinions as well. I hope you've understood what I'm talking about... Thanks!

Answer 1

i was gonna answer something about the termites but "leave britney alone" beat me to it!

Answer 2

you must be very saddened?, maybe it is your mind making things knock?

Answer 3

It might be someone..maybe your cousin..trying to get your attention. Just wait and see if anything else happens before you come to any conclusions.

Answer 4

The termites want to get out.