In this article, we have focused on irritation as a discourse marker for professional foster parents to intervene in adolescents’ disputes. We were interested in how irritation leads to responses from people who are not the object of irritation themselves, but who intervene in the dispute, thus entering and changing the social situation. Four types of responses could be distinguished: 1) responding to the content of the dispute, 2) responding to the process of the dispute, 3) responding to the emotion of the adolescent or 4) ignoring the dispute. Although most cases in our sample seem to exhibit a main strategy that fits this categorisation, in 10 cases different strategies are combined. We showed that in these combined responses professional foster parents do not intervene merely for disciplinary reasons, although they do so when things threaten to get out of hand. They also use these occasions as teachable moments.