When we first bought our house and we were fixing it up, we didn't have a banister on the stairs. I told my wife to make sure she didn't leave anything on the steps. Sure enough, one night I was walking down the stairs in the dark, slipped on something and fell off the stairs into the living room. I landed flat on my back on the floor and the whole house shook. I hit so hard, my first thought was 'I hope the house is okay'.