To the psychiatrist with LOVE

My psychiatrist, my mother true
I wish I had a simple flue
But you showed me that I hate my mother
And I always wished to kill my father
That the stain I saw 
Hanging out on the wall 
Was really my dead brother Joe
Who my uncle killed with hoe
I am wiser as a fish 
I am brighter as a dish
My oil you exchanged
And my brain got rearranged