next to their ears), while lying on their back. The penetrating partner then holds the receiving partner tightly around each instep or ankle and lies on the receiving partner full-length. A variation is to have the receiving partner cross their ankles on their stomach, knees to shoulders, and then have the penetrating partner lie on the receiving partner's crossed ankles with their full weight. Called the Viennese oyster by The Joy of Sex. Penetrating from behind Most of these positions can be used for either vaginal or anal penetration. Variants of the doggy style or doggy position include: The receiving partner is on all fours with their torso horizontal and the penetrating partner inserts either their penis or sex toy into either the vagina or anus from behind. The receiving partner's torso is angled downwards and the penetrating partner raises their own hips above those of the receiving partner for maximum penetration. The penetrating partner places their feet on each side of the receiving partner while keeping their knees bent and effectively raising up as high as possible while maintaining penetration. The penetrating partner's hands usually have to be placed on the receiving partner's back to keep from falling forward. The receiving partner kneels upright while the penetrating partner gently pulls the receiving partner's arms backwards at the wrists towards them. In the spoons position both partners lie on their side, facing the same direction. Variants of this technique include the following: The receiving partner lies on their side. The penetrating partner kneels and penetrates from behind. Alternatively, the penetrating partner can stand if the receiving partner is on a raised surface. The receiving partner lies facing down, possibly with their legs spread. The penetrating partner lies on top of them. The placement of a pillow beneath the receiving partner's hips can help increase stimulation in this position. The receiving partner lies face down, knees together. The penetrating partner lies on top with spread legs. The receiving partner lies on their side with their uppermost leg forward. The penetrating partner kneels astride the receiver's lowermost leg. Receiving partner on top Most of these positions can be used for either vaginal or anal penetration. When the receiving partner is a woman, these positions are sometimes called the woman on top, cowboy or cowgirl positions. A feature of these positions is that the penetrating partner lies on their back with the receiving partner on top: The receiving partner can kneel while straddling the penetrating partner, with the participants facing each other. Alternatively, the receiving partner can face away from the penetrating partner. This position is sometimes called the reverse cowboy or reverse cowgirl position. The receiving partner can arch back with hands on the ground. The receiving partner can squat (instead of kneel) facing the penetrating partner. The receiving partner can bring forward their knees against the ground. The penetrating partner lies with their upper back on a low table, couch, chair or edge of bed, keeping their feet flat on the floor and back parallel to floor. The receiving partner straddles them, also keeping their feet on the floor. Receiving partner can assume any of various positions. The lateral coital position was recommended by Masters and Johnson, and was preferred by three quarters of their heterosexual study participants after having tried it. The position involves the male on his back, with the female rolled slightly to the side so that her pelvis is atop his, but her weight is beside his. This position can also be used for anal penetration, and is not limited to heterosexual partners. Sitting and kneeling Most