"Dop! Dop!"

I was making Eddie a piece of toast. The bread was still in the toaster, but he was eager to have it. He kept pointing at the toaster, looking at me, and grunting. I told him, "Remember it has to pop. Pop! Pop!". Eddie mimicked me by saying "Dop! Dop!" He kept repeating it. I would laugh and smile, and he would say it again. I thought he would forget soon. I left the room. Upon returning, the first thing he said was "Dop! Dop!" While he was eating his toast, he said "Dop!" while pointing to the bread. We will see if he says it again tomorrow while he waits for his waffle to Pop! Pop!.