Your mother’s brother’s only brother-in-law is asleep on your couch. Who is asleep on your couch?

I’m tall when I’m young, and I’m short when I’m old. What am I?

When you say goodbye, I am what you need to tie.
I come as a couple and go wherever you run.
Who am I?

I am first found in caves, now prolific online; I am a depiction, a drawing, a symbol, or sign. I will convey whichever mood you could wish; or for that matter, a fist, flask, or fish. What am I?

A finger goes in me. You fiddle with me when you're bored. The best man always has me first. What am I?

I am a five-letter word and people eat me. If you remove the first letter I become an energy form. If you remove the first two letters, I am needed to live. Scramble the last three letters and I am a drink. What word am I?

You measure my life in hours
I serve you by expiring
I vanish faster when I am thin
and slower when I am thick
The wind is my energy
What am I?

I have cities, but no houses. I have mountains, but no trees. I have water, but no fish. What am I?

Who has married many women but was never married?

What am I?