Children raised in American culture have always been taught “finish the food on your plate, don’t you know there are children starving in China.” It is a conditioning deeply imprinted at a young age. It is not easy to remove. Thus a well-mannered American always tried to finish the food before him and not waste any. As a guest in Morocco, finishing the food on one’s plate means “I am still hungry, give me more food” and will almost always be met with the addition of more food.
It is easy to see how the collision of these two cultural norms can lead to some pretty hilarious situations.