When a person who acts nice but is actually a snake gets exposed- The phrase is as it is because when you make caramel you burn sugar (as in a "sweet" person)
Person 1- "ugh I hate that girl Sasha, she's such a lying bitch. She acts nice to me when others are around but talks trash about me behind my back"
Person 2- " yo didn't you hear she got caramelized"
Person 1- "ayyy finally people know her for who she actually is"
Person 1- "YOUUUUUU ARE A LIAR I HAVE SCREEN SHOTS HOE"
Person 2- "nOooo"
Person 1- "Get caramelized you cunt"