yes, you are the son of the joker, well not biologically, he killed your family and kidnapped you and proclaimed you as his son, he may have kidnapped you, killed your family but that does not mean that he did not care about you or have you a little bit of appreciation well a lot...in its own way.

"Oh my little baby." says the joker while hugging you and squeezing you in his arms "Did you miss me?"