Here are some one liners...
Marriage by Proxy -- Duchess Anne marries Emperor Maximilian the 1st by proxy... meaning the Emperor wasn't there. They will make up for that later but this is the only way she can get married. I also talk about marriage by proxy in Texas.
Rooster or Hen? The Pope's Special Chair -- The legend of Pope Joan lives on as the Pope's chair is used to check if the Pope has testicles or not! I also talk about the Bible using a similar ritual to make a binding oath.
The Human Machine: Vitruvian Man -- This is a classic icon in the modern age. I don't have that much to say about it but I'd feel guilty if I didn't mention it.