Mass produced and incredibly
popular meat
based product.
Unlike steak which is the
cut of an animal, a burger contains any part of the animal as long as it can be reconstituted ground into a patty.
It
may be treated with chemicals as well as containing contaminants from processing as well as being stored for a length of time prior to serving.
Containing practically no nutritional value it’s worthlessness is only eclipsed by Hot Dogs. Nutritionally it is worse than pet
food.
Describing someone or something as hamburger would suggest they have exaggerated self worth or a reputation that exceeds their true value simply due to their popularity.