The Strangest Dream

I am going to write about the strangest dream I've ever had.

In the dream my parents-in-law could stand on the walls and the ceilings. They could also run as fast as an Olympic athlete and asked me why I couldn't do what they could do.
In fact, my mother-in-law can't even stand on her own. A few years ago, she had a surgery on her back to get rid of numbness on her legs but her condition didn't improve.
After leaving the hospital the condition has worsened. Before the surgery she could walk on her own but now she can't even sit up under her own power.

All she got from the surgery was severe pain.