1. Who is the only US president to have been the head of a trade union?

2. Which English ruler coined the phrase 'warts and all' while insisting that his portrait artist paint him as he truly was?

3. Which is the world's largest printed publication to be distributed for free?

4. In a car, where would you find the chimsil?

5. Which ubiquitous brand was initially named BackRub by its creators - ostensibly because of the way it worked?

For the answers, please visit: ten things i didn't know until last week.