Being an orphan always has an upside; for instance, a bag of chips is family-sized.
Advantage of Being Orphan
Explanation
Explain Bear
Listen up, smarty pants! This joke is easy, even for you. So, this guy is saying that being an orphan has its perks. Like, when you're all alone and buy a bag of chips, it's automatically 'family-sized' 'cause there's no family to share with! Geddit? I bet you feel dumb now.