This paper sought to contribute knowledge to the field of sociolinguistics (register). It specifically identified and categorized slang expressions used by the Dar es Salaam University College of Education (DUCE) students studying Bachelor Degree of Arts with Education (BAED) and Bachelor Degree of Education (BED) in day-to-day socio-academic interactions. Data were collected through questionnaire from forty (40) students. The slang expressions were categorized in respect to the meanings/interpretations expressed by the respondents. The categories include slang expressions associated with academics, food and drinks, money, body shapes/parts, people and studying areas. It is concluded that the application of slang expressions motivates DUCE students’ socio-academic interactions as well as strengthening their relationships and bring forth a sense of belongingness.