Mary Grace: Daddy, where are you going?
BJ: I'm going to Wisconsin with Uncle Tim and his student.
Mary Grace: For what?
BJ: We're going to test some foams that will help keep people safe. They're kind of like soap.
Mary Grace: Are you going to test them on Uncle Tim's student?
(I love that at 6-1/2 she already understands the idea that college students are guinea pigs.)