In slang, "basket case" refers to a person who is helpless, emotionally unstable, or completely overwhelmed due to stress, anxiety, or other factors. It can also describe someone or something that is incapable of functioning normally. The term is often used to describe a person experiencing a nervous breakdown or a state of extreme anxiety.
"Sometimes I give myself the creeps
Sometimes my mind plays tricks on me
It all keeps adding up
I think I'm cracking up
Am I just paranoid or am I just stoned?"