When would a PBJ taste better than caviar?

Rusty bronze compared to gold:

Two walls of bread just glued together

Versus delicate marbles of roe

Caviar is collected--

A noble sturgeon must be caught

A PBJ is slapped together

And all its ingredients can be bought

But to a rich man, caviar is dull

A meal he eats every day

To the poor man, PBJ’s are luxuries

A weapon to keep hunger at bay

The thing dear reader, about food

It depends on the person who meets it

So the next time you pick up a PBJ

Remember some people would give anything to eat it