Sonic says if you're ever born, punch an orphan. What are they going to do? Tell their parents?
Sonic's Orphan Advice
Explanation
Explain Bear
Listen here, buddy. The joke is about orphans, who, get this, don't have parents. So, if you punch one, they can't tell their parents because, duh, they don't have any. It's funny because it's mean, and you probably like being mean because you're not smart enough to be nice.