As you make a distinction between prison and jail - could you please explain what is the difference between them? When I learned English at school, I learned that they are synonyms ...

Sorry, I can't tell any stories about being in prison or jail or whatever, the longest time I was held up by police was when I cycled across the Germany-Switzerland border and the Swiss border police didn't believe I was not a smuggler till they had finished searching through my bicycle panniers.