Abstract
This paper examines the code-mixing phenomenon in online communication of the young peopleof Pakistan, especially those on Facebook. The study analyses the two forms and the percentage oflanguage mixing, but also discusses the sociolinguistic background and motivations. The members of thisexperiment included adolescents that were between 14-18 years of age and of different locations inPakistan, whereby the different linguistic and cultural groups are represented. Data was gathered by theauthor through Facebook posts throughout the week and examined to find patterns of interchangebetween Urdu, English and local languages. The result shows that code mixing has a variety of purposes,among them expression of identity, cultural affiliation, and peer-group belonging, and the effect ofeducational exposure. In addition to that, the social media dynamics platforms also promote the use offlexible language and influence the way young users negotiate meaning and self-presentation. This workis a contribution to the formation of digital spaces in modern Pakistan bilingual and multilingual.