Who needs milk or sugar? You're perfect just the way you are! You're a straightforward person who doesn't like distractions. If your friends have something to say to you, you don't want to be sweet-talked -- you'd rather hear the truth. You're very reliable, but not very patient. (You get kind of bitter if people leave you waiting around too long.) You don't need fancy things or special treatment to be happy, so you fit in almost anywhere.
I can't stand my coffee black, but the sentiment's appropriate. I need sweet creamy flavors, a lot of caramel creamer or a slushy caramel frappuccino.