The saying "gets one just desserts" means that one receives the consequences or punishment that he or she deserves for their actions. Some synonyms for this phrase are "receives their comeuppance," "gets what's coming to them," "reaps what they sow," "gets a taste of their own medicine," "gets their due," and "gets their just deserts." These phrases all convey the idea that someone is facing the consequences of their actions and that it was deserved. It is important to remember that actions have consequences, and eventually, those who do wrong will have to face the music.