She's a Brain

Take me I am yours
You don't have to beg and plead when I'm finished with your body
she's a brain (3x)
She is not quite what I wanted
She is not quite what I need
Someone said she was cerebral, but I don't know what that means,
Please explain
Take me I am yours (2x)
she said, 'take me I implore you'
Don't you know that really bores you?
When she's finished with my body,
Does she say she's going to pour me down the drain?