(or so I'm told.)
The girls had a breakfast birthday party to attend yesterday morning. Since I was busy with last-minute preparations for their own birthday party, Aba took them. Later, the mom of the birthday girl told me that she saw two of them sharing a chair. She couldn't remember which two, but from the conversation I'm guessing it was Thing 3 and Thing 2 so I'm tentatively placing them into the roles.
Thing 3: Look at us! We're sitting in the same chair!
Thing 2: That's nothing. We were in the same tummy!
After a few different (skillful) interrogations, I've learned that it was Thing 1 who commented about being in the same chair and Thing 3 who made the tummy comment.