So far, the life-world of students, who are digital native users of social media, did not receive much attention in didactics of philosophy. Their views on social media remain unclear. However, these could be important starting points for lessons in philosophy or ethics, especially to deal with questions of Applied Ethics in the field of digitalization. The article is based on the premise that, from a didactical perspective understanding the life-world of students is to be understood as the finding of pre-concepts in regards to philosophical questions. In this paper, in order to identify preconcepts about social media, we present the conception of a course that discusses the limits of practical freedom in social media with students (age group: 14–18). We also discuss transcripts of student statements and conversations from the course. We explain those via thick description (Geertz) to illustrate the course, but also to develop connections to further philosophical questions and reasoning. The article differentiates between a broad and a narrow sense of “pre-concept” and concludes with the finding of exactly two pre-concepts in the narrow sense, which are shared by the participants of the course.