There's a whole diet that's based around putting butter in coffee. It sounds gross. As somebody who doesn't drink coffee, I'm just going to say, yeah, it totally is gross.

I think that this might be worse. Jim Salisbury is a TV sports reporter from Philadelphia, last week he tweeted last that when he ran out of half-and-half for his coffee, he put in a scoop of mayonnaise. He said that it's, "Not half bad!"

Pretty much everyone on Twitter disagreed and said it sounded horrible. It's not clear if any of them tried it first or just felt like they could make a fair judgment regardless.