"Woman on top, also called the cowgirl or riding position, is a group of sex positions in which the man lies on his back or sits, the woman straddles him facing either forward or back, and the man inserts his erect penis into the woman's vagina or anus.The cowgirl name derives from the image of the receiving partner \"riding\" the partner as a cowboy rides a bucking horse. It is one of a number of receptive-partner-superior sexual positions, another being the reverse cowgirl position."@en . . .