Obsessive nose picking is called Rhinotillexomania.
101
Foreign accent syndrome is a rare brain disorder which causes people to speak in a foreign accent involuntarily.
15
A singing birthday card has more computing power than the allied forces in 1945.
30
Play-Doh was first manufactured as a wallpaper cleaner.
122
The gas that gives rotten eggs their distinctive foul smell may slow ageing and block damaging chemical reactions inside cells, according to scientists in China.
5
You can't tickle yourself.
29
The average sperm cell swims at 8 inches per hour.
4