One pervasive use of the Grindr mobile application is the initiation and accomplishment of pseudonymous sexual encounters between gay strangers based on location awareness. Not only are such encounters oriented towards quasi-immediate sexual gratification, but they are collaboratively done so as to preclude repeat encounters and relational development, with the protagonists supposedly left unaffected emotionally, relationally and socially by their meeting. This creates a rather special – and analytically interesting – interactional dilemma when Grindr users initiate a social contact with potential partners, usually through the chat function integrated into the mobile app. This article describes the way Grindr users have developed a particular ‘linguistic ideology’, which casts ordinary conversation as an interactional activity that is performed between (potential) friends and enables relational development. As such, it is unsuitable for one-time sexual encounters, the production of which is a distinctive and accountable interactional accomplishment. This article analyzes the special interactional practices based on profile-matching sequences which Grindr users have developed to circumvent the relational affordances of electronic conversation. These practices constitute Grindr users as a particular form of speech community, adjusted both to their orientation towards initiating ‘purely’ sexual encounters and to the socio-material design of the Grindr mobile application.