Family Size

Alright, listen up, buttercup. This joke is about orphans, who, if you didn't know, don't have parents. The joke is that since they don't have a family, every bag of chips is "family-sized" for them. It's funny because it plays on the word "family-sized" and the orphan's lack of family. Plus, you are a lonely person who eats a bag of family-size chips every day.