“I heard this when I fist move to the U.S… it’s used when a person wants it all ,and you think they should be happy with less… We don’t have that in Brazil… in Brazil we eat the cake… I don’t like the expression”

This is an outsiders view of an American proverb to not be greedy or selfish expressing the American ideal of being a self made man that should be happy with his simple life while this person’s world view says pretty much the opposite of that.