'X' became symbolic for a kiss because in the middle ages when alot of people were illiterate and they used to sign documents with an X and then kiss it for sincerity.
255
Tae Kwon Do is only around 60 years old.
64
A jiffy is an actual unit of time for 1/100th of a second. Thus the saying, I will be there in a jiffy.
57
A pipe 2 feet in diameter will allow four times more fluid to pass through it than a pipe 1 foot in diameter.
20
In Dubai, there’s a fridge magnet that orders a pizza delivered to your door.
12
According to the New York Times, a study conducted during the 1980's found that men who kiss their wives before leaving for work live longer, get into fewer car accidents, and have a higher income than married men who don't.
14
If you get water flowing fast enough, it can cut metal.
354
97% of all paper money in the US contains traces of cocaine.
93