These are things that I didn't know. And not many people know this...
1. Q: Why are many coin banks shaped like pigs?
A: 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 known as 'pygg banks.' When an English potter misunderstood the word, he made a bank that resembled a pig. And it caught on.
2. Q: Did you ever wonder why dimes, quarters and half dollars have notches, while pennies and nickels do not?
A: 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.
3. Q: Why do men's clothes have buttons on the right while women's clothes have buttons on the left?
A: When buttons were invented, they were very expensive and worn primarily by the rich. Because wealthy women were dressed by maids, dressmakers put the buttons on the maid's right! Since most people are right-handed, it is easier to push buttons on the right through holes on the left. And that's where women's buttons have remained since.
4. Q. Why do X's at the end of a letter signify kisses?
A: 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.