Answer:
Walk on the living, they don't even mumble. Walk on the dead, they mutter and grumble.
What is neither inside the house nor outside the house but a necessity for any home?
The more of them you take, the more you leave behind. What are they?
In the evening I'm long, in the morning I'm smallΝΎ When seen in a ballroom, I'm nothing at all.
What can be swallowed, but can swallow you?
I am your mother's brother's only brother in law. Who am I?