This paper analyses the phenomenon of participatory ambiguity in aggressive ritualistic interactions. One can ‘participate’ (Goffman 1979, 1981) in an interaction in different statuses, and these statuses entail different interactional constraints and obligations, also within the realms of language aggression and conflict. The paper is interested in a specific aspect of participation, namely ratification — the assumed right to participate in an interaction. ‘Ambiguity’ describes forms of behaviour which deviate from participant and observer expectations of interacting in certain discursive roles, without clearly violating (un)ratified participation roles. Examining the link between participatory ambiguity and language aggression fills an important knowledge gap in the field, as this area has been relatively ignored. Heckling in experimental performing arts is taken as a case study.