The characters are talking about tropes. They're not talking about tropes from their own series, so it's not Lampshade Hanging. They're not talking about tropes in a way that goes "hey, we're aware that we're fictional", so it's not Meta Fiction. They're not actively involving the viewer, so it's not Post Modernism. They're not tearing down the tropes, so it's not Deconstruction.
They're just [...] [tvtropes.org]