Basil Bernstein, conducting his empirical researches, discovered that the language we use in everyday life can influence an individual’s behaviour. The individual’s placement in the society structure can embed non-acceptable social behaviours and determines the particular way the language is employed. Nowadays, teenagers are using obscenities, word shortcuts, neologisms and borrowings from other languages, which are not necessary comprehensible for the older generations. In that way they create a new language, specific to certain social groups. This article concerns the relationships between the employed language and the cultural transmission in multigenerational families, in which non-homogenous type of speech can lead to the rise of conflicts.