Given the relevance of social media platforms into everyday life, User-Generated- Contents (UGC) have come to represent one of the richest and used source of online information (Koltringer and Dickinger, 2015). UGC include online information sources that are developed, and used by consumers who intend to communicate each other and share information about products, brands and services (Culotta and Cutler, 2016) influencing other customers’ perception and decision-making process. In this perspective, for marketers who need to manage their brands, UGC on social media provide new opportunities and new dangers. One particular kind of contents created by consumers are parodies of advertisement (parodic ads), humorous messages that parody extant advertising (Roehm and Roehm, 2014). This kind of UGC can damage or be beneficial for brands image and reputation. After the development of an overview about parody literature in management discipline, this research aims at investigating the effect of parodic ads video - created and shared by users on social media - on the image and the reputation of the parodied advertising's brand. With this aim, authors will developed a content analysis on ads videos and parodic ads videos and related comments on You Tube.