Andy Warhol created his *Piss Paintings* by urinating on canvases primed with copper-based paint, allowing the chemical reaction between the urine and metalite pigment to produce unpredictable, oxidized patterns of gold, green, and brown. The works emerged from Warhol's Factory in the 1970s and challenged traditional notions of artistic process and authorship by surrendering control to a purely bodily and chemical act. These provocative pieces blur the boundary between the abject and the aesthetic, inviting reflection on value, transformation, and the nature of artistic creation.