Morty, Water T and others in “Unfinished Business”

It seems kinda obvious that these scribbles are, like, the original species that Letters and Numbers came from. So that relic thing probably isn't a "1" or an "I", i-it's probably just, like... a line? It's symbolic of the fact that your people don't need to be at war!

...how do I know you, again?

"Get Schwifty?"

It's still nothing. So mind your damn business!

At least we agree on that.

Mr. Goldenfold

Looks like your detention is officially over.

Why?

Mr. Goldenfold

You finally learned how hard it is to teach.

No, I didn't.

Mr. Goldenfold

Then you... learned how hard it is to learn.

I already knew.

Mr. Goldenfold

Just go to bed, you ungrateful shit!