What does “Just Deserts” Mean?
The expression just desserts is a common misspelling of the actual idiom just deserts, which simply means to receive what one deserves. It is one of the more commonly misspelled idiomatic expressions, because it uses an archaic word most people are no longer familiar with. This type of spelling error based on a mishearing of a word, or misunderstanding of its context, is often referred to as an eggcorn.
