Who is that trapped behind the piano?

If I am in hospital tomorrow it is because my Mother hurt me.
 
Clarification - my Mother wasn't actually hurting me.  I was home on Sunday and was tasked with helping her move several large pieces of furniture about the house.  It was a lot of lifting.  In the future I will encourage the purchase of modular pieces of furniture - plastics would be OK as well.  I don't think my furniture moving days are behind me...