Erotic spanking is the practice of spanking another person for the sexual gratification of either or both parties. Mostly use for that other person pleasure (the one getting spanked). Subjects may use their hands, or other tools, such as spanking paddles or canes. Activities range from occasional sensual interplay to domestic discipline and may or may not include a variety of implements. Many cultures recognized pain as an aphrodisiac early on — the Kama Sutra, in particular, goes into specific detail on how to properly strike a partner during sex.