Tickling was a form of torture used in ancient China on nobility because it left no mark and recovery was quick.
33
It has been calculated that a single breath from a mature blue whale can inflate up to 2,000 balloons.
492
In the UK, there's a guy named 'Major Dickie Head'.
31
Yawns are more contagious among people with closer relationships.
163
Hot water can freeze faster than cold water.
181
Oral sex was illegal in 18 states under old sodomy law until 2003 when they were invalidated.
196
During the Black Plague, it was thought that bad smells were the cause of the plague. "Plague Doctors" therefore wore masks with long beak-like noses stuffed with flowers or smoke to hide the smells.
19