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?