imaginary friend

Usually as a result of not having much or any friends in reality, your mind creates an imaginary friend. Even the creator of an imaginary friend cannot see them, unless if they are on LSD, or just hallucinogenic. You're not nessecarily "crazy" if you have one. You can just talk to them in your mind, they can think for you sometimes, you can ask them for advice or ask them to decide which movie you want to rent tonight. You can get into arguments with them, and you can have intelligent conversations with them. But... You can't kill them. They might slowly fade away in time... but... I don't know... Yeah. Also. You can completely change into your imaginary friend. Sad I know.