Advertising is a prominent discourse type which is inevitably linked to a range of disciplines. This study examines the language of a non-product advertisement, not isolating it from its interaction with other texts that surrounds it. It is based on Norman Fairclough's Critical Discourse Analysis (CDA) framework in which there are three levels of analysing texts: Description, Interpretation and Explanation. In addition to analysing the advertisement at hand in terms of these three levels, the study includes semi-structured interviews conducted with English language teacher candidates. The purpose is to explore the social function of advertising not only from sounds, sights and language of the text, but also assess the impact of these on people. Findings from inductive content analysis point to the fact that there is a close connection between the advertisement discourse and the "teacher" image in the minds of participants.