You shouldn't fake mental illness.
Joe, who forgot to bring his wallet to the store, sees a mentally ill man pan handling on the sidewalk.
Joe wants to earn some money for the store.
Joe does some back flips and break dances on the sidewalk.
Joe panhandles while prentending that the has a personality disorder.
Joe gets money from strangers who are amazed by his dancing skills.
Joe gets called out and booed by strangers who notice that he's faking.