Dad and Mom: -takes one look at Child-
Dad and Mom: "We don't want him."
Orphan: And I took that, personally.
Dad and Mom: -takes one look at Child-
Dad and Mom: "We don't want him."
Orphan: And I took that, personally.
The humor comes from the orphan's reaction. Instead of being upset that their parents don't want them, the orphan acts as if it's a personal insult, like a bad review instead of a rejection. It's funny because it's an overreaction.