I saw a little kid crying because he was lost. I asked him, "Where are your parents?"
God, I love working in an orphanage!
Alright, listen up, buttercup. The joke is that the dude works at an orphanage, meaning all the kids there don't have parents. So when he sees a lost kid crying for his parents, he's secretly happy because that means more work for him at the orphanage. You probably donate to the orphanage because you lost your parents in a tragic accident, didn't you?