"The caterer The dutiful Jewish son is sitt..." joke

The caterer
The dutiful Jewish son is sitting at his father`s bedside. His father is near death.
Father: "Son."
Son: "Yes Dad."
Father: (weakly) "Son. That smell. Is your mother making my favourite cheese cake?"
Son: "Yes Dad."
Father: (even weaker) "Ah, if I could just have one more piece of your mum`s cheese cake. Would you get me a piece?"
Son: "OK, Dad."
(Son leaves and walks toward kitchen. After a while the son returns and sits down next to his father again.)
Father: "Is that you son?"
Son: "Yes Dad."
Father: "Did you bring the cheese cake?"
Son: "No Dad."
Father: "Why? It`s my dying wish!"
Son: "Well Dad. Mom says the cake is for after the funeral."