Intercrural sex (from "inter-" and Latin "crura", legs), also known as femoral/interfemoral sex/intercourse, is a type of non-penetrative sex, in which a male places his penis between his partner's thighs (often with lubrication), and thrusts to create fr
By their late teenage years, at least 3/4 of all men and women have had intercourse, and more than 2/3 of all sexually experienced teens have had 2 or more partners [Sexual and Reproductive Health: Women and Men. 2002]
As an ethologist, Desmond Morris proposed that breasts, a secondary sex characteristic located on the woman's chest, encouraged face-to-face sexual intercourse.