Pardon me, this fact seems to have been accidentally deleted by Alexander a while back!
So sorry!
I'll add 3 facts for this one instead!

***

1. That sudden jerk you sometimes experience when you 'slip' in a dream while half asleep is called
"Hypnic Jerk"

2. Roman Emperor Augustus witnessed a man attempt to feed a slave to lamprey eels as a punishment for breaking a cup.
Augustus freed the slave and had the rest of the man's cups broken.

3. Everyone has three lives:
A private life,
A public life,
And a secret life.