LUBE 101: Lubricant is used during sex play to reduce friction, create slickness, and thus make sex more pleasurable. While lube is certainly recommended for folks with vaginal dryness, lubricant can actually enhance the sexual experience for anyone, even if they lubricate naturally.Lubricant is necessary for anal sexbecause the anus does not self-lubricate, as the vagina does. Spit does not suffice as lubricant as it dries out incredibly quickly and does not provide the same slickness that lubricant does.  More Info