The goal of this study is to analyse the use of mimicry in Nigerian stand-up comedy. Mimicry is conceived as a strategy in the routines of Nigerian stand-up comedians, who adopt two kinds of mimicry acts: verbal and nonverbal. For comedians to use mimicry, they have to draw from collective beliefs they share with their audience. On their part, the audience find a mimicry act humorous because it relates to their background assumptions. Data for analysis comprised four routines of four Nigerian stand-up comedians purposively selected because of the comics’ extensive use of mimicry. Mimicry activates background assumptions, distorts the collective representation of the target and could be used for articulating voice in stand-up performances.