Meaning of life jokes

My teacher gave us an assignment, and one of the questions was "What do you want to be when you grow up?"

I answered, "Happy."

The teacher said I didn't understand the test. I said to her that she didn't understand life.

"I hope my death would make more sense than my life."- Joker

Don't say your life is a joke because jokes have meaning.

People say that life is short.

I say... life is the longest thing we ever do.

I wish I could say that my life is a joke, but I can't because jokes have a meaning.

Life's too short to want it.

"Boom, quick; you have five seconds to give me three reasons to live." "1......2......3 .....4....5..." Did you notice you said nothing at all?