Moo goo gai "can"

It all began when David was screaming during a teeth brushing session. Michael said the funniest word that came to mind "moo goo gai pan."  This distracted David and kept him laughing through the rest of the time. He keeps forgetting the Chinese dish name so it invariably becomes " moo goo gai can."  

Today I said that Abigail could not talk. David disagreed with me. When I asked If he could understand her, he said, "yes!"  When I asked what she said, he told me...

"She said she wants moo goo gai can every morning for breakfast. I told her should could not have it for breakfast."

This is the same little boy who has nicknamed said-sister "Little Toe."