Most people smile when they are frustrated, according to a study.
15
The Japanese commonly put ketchup on their rice.
16
The average person will go on a date at least 100 times before they finally marry.
33
There are actually seven different types of twins: Identical, Fraternal, Mirror-Image, Polar Body (Half Identical), Mixed Chromosome, Superfecundation, and Superfetation.
20
You will experience the billionth second of your life when you are 31 years old.
21
Americans did not commonly use forks until after the Civil War.
82