If you want to be really technical…
- ‘I was the oldest’ is an explanation
- ‘Oldest brothers get everything’ is an explanation for the explanation, and
- ‘That’s why we’re racked with guilt’ is an observation about the explanation for the explanation.
Phew!
Vizzini’s final explanation is like a joke from a stand up comedian—it’s an unexpected turn to make you laugh. Your version doesn’t have to be funny, though. Just make each explanation build on the last. Remember to start simple.
Here are some examples.