Not to be a grammar Nazi (actually that is exactly what I am doing), but it is Eminem, not M&M. Eminem (often styled "EMINƎM") is the stage name for the rapper named Marshall Mathers. An M&M is a chocolate candy. If you were, in fact, referring to the candy then the sentence should read "... please, you are not an M&M." (notice the added comma as well)
had to get my jab in as well