A proposition which you deny, or cast doubt on, by the act of making it. Habermas claimed that manipulation was a form of performative contradiction. To take part in a conversation involves an implicit commitment to ideals of truth, normative rightness and sincerity, which manipulative speech goes against.The simplest case: "Are you asleep?""Yes."

Slightly subtler: "I've got to stop reinventing myself."

I collect them.