Fun Factoids

[Some of these ideas are news to me, so I've decided to share... however I do not vouch for their accuracy]DID YA KNOW?Why do dimes, quarters and half dollars have notched edges, while pennies and nickels do not? The US Mint began putting notches on the edges of coins containing gold and silver to discourage holders from shaving off small quantities of the precious metals. Dimes, quarters and half dollars are notched because they used to contain silver. Pennies and nickels aren't notched because the metals they contain are not valuable enough to shave.Why do Xs at the end of a letter signify kisses? In the Middle Ages, when many people were unable to read or write. Documents were often signed using an X. Kissing the X represented an oath to fulfill obligations specified in the document. The X and the kiss eventually became synonymous.Why is shifting responsibility to someone else called "passing the buck"? In card games, it was once customary to pass an item, called a buck, from player to player to indicate whose turn it was to deal. If a player did not wish to assume the responsibility, he would pass the buck" to the next player.Why do people clink their glasses before drinking a toast? It used to be common for someone to try to kill an enemy by offering him a poisoned drink. To prove to a guest that a drink was safe, it became customary for a guest to pour a small amount of his drink into the glass of the host. Both men would drink it simultaneously. When a guest trusted his host, he would then touch -- or clink -- the host's glass with his own.Why are people in the public eye said to be "in the limelight"? Invented in 1825, limelight was used in lighthouses and stage lighting by burning a cylinder of lime in an oxyhydrogen flame that produced a brilliant light. In the theater, performers on stage in the ''limelight" were seen by the audience to be the center of attention.Why do ships and aircraft in trouble use "mayday" as their call for help? This comes from the French word m'aidez - meaning "help me" - and is pronounced "mayday." (Note: not exactly.... it's pronounced "med-ay", but close enough)Why are zero scores in tennis called "love"? In France, where tennis first became popular, a big, round zero on the scoreboard looked like an egg and was called l'oeuf, which is French for "egg". When tennis was introduced in the US, Americans pronounced it "love,"Why are many coin banks shaped like pigs? Long ago, dishes and cookware in Europe were made of a dense, orange clay called pygg. When people saved coins in jars made of this clay, the jars became know as "pygg banks". When an English potter misunderstood the word, he made a bank that resembled a pig. And it caught on!