What's In My Head?

If you want to know what mania feel like, then believe me when I say the Cranberries nailed it in their song Zombie :

... In your [my] head, in your [my] head
They are fighting
With their tanks and their bombs
And their bombs and their guns
In your [my] head in your [my] head they are crying ...

What's in your [my] head?

... When the violence causes silence 

... It's the same old thing since 1916 [I was 19]
In your [my] head, in your [my] head
They're still fighting
With their tanks and their bombs
And their bombs and their guns
In your [my] head, in your [my] head they are dying ...