I like being viewed as crazy sometimes
Why do you think it is cool to be seen as crazy?
Sometimes people think I have a mental illness and it's somewhat funny.
It's nice you're getting the attention you want, but mental illness is not something to just wear as a costume. People with legitimate mental illnesses don't need their conditions trivialized and fetishized. It is rude, demeaning, and inconsiderate.
It's just a joke. Mental Illness is not to be taken seriously.
I'm glad you are just joking, but you need to be careful about what you are trying to joke about. If you tell it to the wrong person, do you know how you might make them feel? Perhaps it's better to volunteer to help people in need instead of making fun of them.