"[…] the character may invest in the specialty of sexual positions. Each SP invested represents a sexual position known. During doggie style, the partner’s Facial Charisma counts only half as much as Bodily Attractiveness regarding the skill check. *Large differences in Debauchery between partners will cause a penalty to the impression of Sexual Adeptness (see Debauchery in Chap. 6: Sociality). Subtract one character’s Debauchery (D2) from the others (D1), divide the result by 100, and truncate the remainder. Apply the result as a penalty. For reference, the formula is below: [(D1 – D2)2] /"