Pancakes in the Age of Enlightenment

I was watching Swingers last weekend and it has the lines:
Mikey: ...and it says here "breakfast any time"
Waitress: That's right.
Mikey: I'll have the pancakes in the Age of Enlightenment please.

Last night on The Hour, PJ O'Rourke started talking about The Enlightenment and how it affected writing.

This isn't such a spectacular coincidence except for the fact that I never bothered to learn what the Age of Enlightenment was -- even though Swingers is one of my favourite movies and I've watched it a dozen times -- until this weekend shortly after watching Swingers again. As a result up until now I was ignorant of not only the time period but also the reason why Mikey's lame joke was supposed to be funny.

So here's a question: now that I know what The Enlightenment is am I more likely to notice when it is mentioned and think it's a coincidence -- or is this an actual coincidence? Couldn't that be true for anything I was formerly ignorant of?

You don't notice what you don't know?

I'll try not to hurt myself thinking about that...