Nancy: Wow, it's already dark outside.
Joanna: *staring at her computer screen* What is dark?
N: Well. Dark is when it gets all black outside and we make fires.
J: Wha--? OH. Dark. Nighttime. Got it.
N: I think it's time for a break.
*Two days later*
N: Why do you have ink all over you?
J: I needed to write a few things down, but I couldn't find any paper, so I just used my hand. And my arm.
S: Ha, I needed to write down a number earlier and only had paper. The only pen in my purse was a blacklight pen.
N: A what?
S: It's a pen that only shows up under blacklight. I used it for the number anyway, but now I can't find where I wrote it because I don't *have* a blacklight.
N: Yes. Time for break.