A man says, "Brothers and sisters, have I none, but that man's father is my father's son." Who is that man?

I am a type of word that is spelt incorrectly or used differently, on purpose for humour. What am I?
Hint 1: You can find me in a joke.
Hint 2: I am a play on words.

You walk into a room that contains a match, a kerosene lamp, a candle and a fireplace. What would you light first?

Why is the Hole below a Lock?

You’ll find me on Mercury, Earth, Mars, Jupiter, Saturn, and Uranus. But never Neptune, or Venus. What am I?

What jumps when it walks and sits when it stands?

There are a number of books on a shelf. If one book is the 4th from the left and 6th from the right, how many books are on the shelf?

I cry without having a voice.
I fly without having wings.
I bite without having teeth.
I whisper without a mouth.

Who am I?

I’m orange, I wear a green hat and I sound like a parrot. What am I?

O_er_t_o_

Complete the missing letters of the given word.