Post things that you've learnt in your life. Learning from books, movies, internet, school etc. doesn't count. Life experiences

1) Sex (rape?) in mental hospitals is extremely common. Especially mixed-gender ones (yeah, they exist). And yes, the nurses get involved (and usually end up in jail as a result)
2) Even extremely intelligent people are extremely dumb at times
3) Brits are awful tourists, but Germans and Russians are at least as bad. American tourists that are wealthy enough to come to Europe are usually chill (if a bit old, unfashionable and annoying) but American tourists within the Americas are absolutely the worst on the planet