Why can't orphans open a family business?
Because there is no family.
Why can't orphans open a family business?
Because there is no family.
Listen up, kid. This joke is all about wordplay. Orphans don't have families, right? So, the joke is that they can't open a "family" business because they literally have no family. It's funny 'cause it uses the word "family" in two different ways. And you are dumb.