What questions have you always wanted to ask your parents/family?

I have been spending a lot of time with my mom this past week, and I finally learned how she met my dad. (Fun fact: she thought he was a creep.) I also learned more about her twin brother (an uncle I never knew; she doesn't know what happened to him).

It made me think, what questions about your family have been burning in your head that you'd like answers to? What would you like to learn/know?