Thank you for complimenting my thoughts.
Also, I remember a time Ernie kind of got punished for his food filching. Ernie ate one of the pieces of cake Bert bought. And Ernie made up a story about a monster eating it and leaving. Bert didn't believe it and left. But then Beautiful Day Monster came in and ate the second cake and handed Ernie the napkin and fork. When Bert saw the last cake gone and Ernie with the napkin and fork, he left in disappointment and poor Ernie got upset.
In a way, Ernie kind of got what he deserved for all those times he took Bert's food. Bert didn't believe him one bit.