A rainbow party is a supposed group sex event featured in an urban legend spread since the early 2000s. A variant of other sex party urban myths, the stories claim that at these events, allegedly increasingly popular among adolescents, people wearing various shades of lipstick take turns fellating others in sequence, leaving multiple colors (resembling a rainbow) on their penises.[1]
The idea was publicized on The Oprah Winfrey Show in 2003, and became the subject of a 2005 juvenile novel called Rainbow Party.[1] Sex researchers and adolescent health care professionals have found no evidence for the existence of rainbow parties, and consequently attribute the spread of the stories to a moral panic.[1]