"Just Lose It" is a song by American rapper Eminem from his fifth studio album, Encore (2004). It was released on September 28, 2004, as the lead single from Encore, and was later included on his greatest hits compilation album, Curtain Call: The Hits (2005). The song caused controversy as its lyrics and music video parodies Michael Jackson, who was being accused of child molestation at the time. The song also pokes fun at Beavis/Cornholio, MC Hammer, Madonna, and others. It also heavily spoofs Pee-wee Herman, going as far as imitating his signature shout during the chorus and Eminem dressing like him in the video.

Marshall Bruce Mathers III, known professionally as Eminem, is an American rapper. He is credited with popularizing hip hop in Middle America and is widely regarded as one of the greatest rappers of all time. His global success is considered to have broken racial barriers to the acceptance of white rappers in popular music. While much of his transgressive work during the late 1990s and early 2000s made him a controversial figure, he came to be a representation of popular angst of the American underclass and has been cited as an influence by and upon many artists working in various genres.