Msg is a short form for "Massage." In the context of a porn video, it refers to scenes where characters are involved in a sensual massage scene. This may include oil or lotion being applied to the body, hands gliding over sweat skin, and other intimate touch. These scenes often build up to sexual intercourse or serve as an arousal technique between partners. In some cases, Msg can also refer to a specific fetish for massages in a pornographic context