When it comes to expressive language, there are plenty of synonyms for the phrase "sassy talk." To start with, some might call it "smart-mouthed remarks" or "backtalk." Others might use terms like "snappy comebacks" or "witty retorts." If we want to add a touch of attitude, we might call it "sass," "lip," or "cheek." More colorful synonyms might include "brassiness," "cockiness," or "impudence." Ultimately, the way we describe language depends on the situation and context, but these terms all convey a sense of confident, bold, and often humorous exchanges between people.