Spanking 15 July 2002, London A4 (29,7 x 21,0 cm) Water color and pencil on letter head paper i The figures are from a telephone booth advertisement of a brothel in London. Spanking is the most used traditional form of physical punishment, consisting of a beating applied on the buttocks. Erotic spanking is the practice of spanking another for the sexual gratification. 760 / 779