Performative contradiction
A performative contradiction arises when the making of an utterance rests on necessary presuppositions that contradict the proposition asserted in the utterance.
The term was coined by Jürgen Habermas and Karl-Otto Apel, who attribute the first elaboration of the concept to Jaakko Hintikka, in his analysis of Descartes' cogito [ergo sum] argument. Hintikka concluding that cogito ergo sum relies on performance rather than logical inference.
Habermas claims that post-modernism's epistemological relativism suffers from a performative contradiction. Hans-Hermann Hoppe claims in his theory of discourse ethics that arguing against self-ownership results in a performative contradiction.