Source: Lecture 3 | Programming Paradigms (Stanford) (It's a Youtube video, So just click the link and it will automatically take you to the exact moment he says it. I have put in a time stamp for you there.)
Example:
Let me just write a function I know you've seen before and it's actually charmingly simple for us to go out because this is all very difficult compared to what I'm about to write.
Specifically, I don't understand what for us to go out means.