Quite funny, yet poetic practise sentences here.... I struggle to get the point in some of them (why I should learn such proverbs of adventurous composition). This one sounds almost sociocritical IF its meaning really is what I assume: "For you it may be just a dry loaf of bread, for me it is a full course festive meal". So let them eat cake...(if they don't have any bread).
It's something to say if anyone ever criticizes you for eating pastries for dinner.
I am so glad I got that wrong the first time, so I could bask in its defiant tone the second time.