A large dump that is so dark that it looks black. Usually caused by eating a bunch of shitty food for many days. It is best taken in a portable shitter so that everyone can admire it.
In Buffy the Vampire Slayer (episode: Crush, Season: 5), when describing his ex-girlfriend Drusilla, Spike says, "...she never stopped taking me to new depths. I was a lucky bloke. Just to touch such a black beauty."
A very large, horselike member, with impressive girth, enormous length and unbelievable stamina. Typically known for its forceful ejaculation and long strokes (or strides). Named for its similarity to the male horse genitalia and its dark color.
"Charles doesn't use Black Beauty to plow fields, but rather your mom, sister, wife and daughter."