What is the definition of cheesy chat up lines?

Answer 1

If u are chatting, and if you say something like, "The happiest day of my life" or being a kiss-up, that is pretty cheesy.

Answer 2

Cheesy chat-up lines are cliché, often overused lines or phrases that people use to try to initiate romantic or flirtatious conversation. They are usually seen as cheesy or corny because they lack originality and are perceived as insincere or trying too hard to impress.