Who is Scrooge talking about when he says "poor boy"?

Scrooge is talking aboout himself when he says, "Poor boy!"

“Why, it’s Ali Baba!” Scrooge exclaimed in ecstasy. “It’s dear old honest Ali Baba! Yes, yes, I know! One Christmas time, when yonder solitary child was left here all alone, he did come, for the first time, just like that. Poor boy!