I Am A Human Head

I am a human head And my best friend is also a head I don't really need my best friend Now my friend is gone And I'm only a head by myself I find, I don't need my whole head Now I'm just the top of a head Just the scalp and the hair I don't like the scalp, just the hair What do I really need? Best friend, also a head Just the head, just the scalp, hair Friend, no head No scalp, no hair I am only one human hair With no scalp for a home All I need's the top of a head Now all I am is just a scalp I ain't have any head I'd be glad if I had a head Now I have a head, look at me I'm a fine floating head Where is my friend, the other head?