TJ: All kids run slow.
Mama: Yes, they do. But once they get a little older, they will be able to run faster.
TJ: NO! NOT KIDS. Pigs!!
Mama: Oh. Pigs. Yes, all pigs do run slowly.
TJ: Yes. They have short legs, that's why. All the other animals run fast. Zebras run fast because they have longer legs.