Which wheel of car does not rotate when you turn your car right?

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.

In one of the popular batman series movie "Batman Forever", there was a riddle that goes like "Tear me off and then scratch my head and I was red then and now I am back. Who am I?

Can you name four days which start with the letter 'T'?

Buy me, smell me or deliver me, I do not change.

Who am I?

What is 3/7 chicken, 2/3 cat and 2/4 goat?

Bay of Bengal is in which state?

I can turn polar bears white.
I can make anyone dance.
I can make everyone cry
I can make your hands clap
I can make you thin.
I can make you smile.
I can make you smile

Can you guess the riddle?

What do you get if you add 2 to 100 four times?

Rearrange the letters in "new door" to make one word.