The philosorapter

Thing Two: Once, Dale did philosophy against me and [Thing Two].

Other guy

When Dale and Erin were visiting,
Thing Two: Dale? Other Guy? Come here!

A long time ago

We came across a picture of the Lincoln Memorial in a book.
Thing Two: That guy dead?
Me: Yes. He died a long, long time ago.
Thing Two: When Daddy live with Dale?

Dale's neighborhood

On vacation, we passed a house near Dale where the roof is a hyperbolic parabaloid.
Thing One (upon seeing the house): What's with that funky little house?

A good day

After his flu shot, Thing One wouldn't take his Band-Aid off, insisting that it fall off on its own. Four days later, while on vacation,

Thing One: My Tazmanian Devil Band-Aid fell off at Dale's house! This is a good day!