Potassium is one mineral that plays an important role in controlling the amount of fluid in the body. Another is sodium. Too much sodium -- which the body mainly gets from salt -- leads to the body retaining fluid.
Depending on which account you believe, the real McCoy was a boxer, an inventor, a rumrunner or a Scottish clan leader. Here are just a few of the phrase's possible origins: In the late 1800s, American welterweight champion Norman Selby boxed under the name Kid McCoy.. Two stories about Selby give a possible explanation for the phrase. In the first story, Selby was challenged by a drunk in a bar, who questioned whether he was really the legendary fighter he claimed to be.
Fuck isn't an Anglo-Saxon word either. Some of today's swearwords did indeed originate in Old English, including shit, arse, turd, and the British bollocks. The f-word is of Germanic origin, related to Dutch, German, and Swedish words for to strike and to move back and forth. It first appears, though, only in the 16th century, in a manuscript of the Latin orator Cicero.