A character doubt a compliment's sincerity.
Fuschia: Oh, I bet you say that to all the devil girls.
-- SinfestJill hears a compliment -- of any type and quite possibly sincere -- from Jack and says that it was not sincere, such as doubting he meant it for her particularly, or calling him a charmer, or a rogue, a silver-tongued devil or other less than honest characterization, or it flattery, or telling him to stop it. The compliment can be sincere; Jill can even know it. It's a ploy to avoid having to take the compliment at face value, and respond accordingly -- assuming it's not fishing for more compliments. Ranges from a simple form of banter or flirtation, or even trying to avoid appearing stuck up, through indicating that the character is not to be won over by flattery or manipulation, to a belligerent repulse of sociability, to a crushing lack of confidence. A socially awkward Jack will often make only semi-coherent protests of sincerity, which never ends well in that scene. Many characters will be frustrated. Some will regard it as a challenge. When it's banter, the other character may banter back. A wise reaction to The Casanova. Think Nothing of It overlaps when it combines with gratitude. Compliment Backfire is the Sub-Trope where the compliment person is actively angry over the compliment. Truth in Television
Oh, her eyes, her eyes, make the stars look like they're not shining
Her hair, her hair, falls perfectly without her trying
She's so beautiful, and I tell her every day
Yeah, I know, I know, when I compliment her she won't believe me
And it's so, it's so, sad to think that she don't see what I seeWeb Comics Real Life