Usually we don't put thought into which particles are used in accordance with a function, and what their position in a comment may mean. Eventually, there are different variations of particles in general, and in specific of their function in everyday dialogues. This thesis examines the use and function of the particles ?ja? and ?nein? in everyday interactions, with a focus on one field: By means of an examination of teasing activities in informal everyday dialogues, these particles are analysed in regard to their function and position. In doing so, the object of study of this thesis is interactive actions in a situational context; it therefore requires a methodical approach that lives up to the meaning of the words or, respectively, comments in context of their use and communicative activities. Hence, this thesis is to be understood as a contribution to conversation analysis, whose central aim it is, by means of one corpus, consisting of dialogues among adolescent speakers, to examine if ? by using the defined particles ? differences regarding their position and function can be determined, and, if so, how these differences are to be interpreted. The theoretical approach to the communicative category of teasing is followed by a discussion of the particles ?ja? and ?nein? as well as their different attribution function within the spoken language. Eventually, as core of this thesis, single case analyses are carried out by means of specific sequences of teasing, in which relevant clippings of interaction are interpreted utterance by utterance. The aim is to examine particles as reoccurring characteristics of structure of teasing activities, which implement different functions in this context.