I like my coffee like I like my books--black and banned by the Pope.
Aunt JoJo says try to have a little saturated fat inside your stomach with that black coffee. Coconut oil, egg, butter, buttermilk, palm oil, meat fat, 2% milk, peanut butter, something. Because if there is no fat in your stomach when the coffee enters it, the coffee won't emulsify any stomach contents. Which means when the coffee hits your bloodstream, it could cause a stroke when it emulsifies fat in your bloodstream, releasing it into circulation. At least, that's what I heard.
But not baby oil like Swishypants.