is used for both vaginal and anal sex. The piledriver sex position, which is similar except that the lower partner's bottom is raised into the air to bring their feet close to the ground, can also be modified into a spread eagle version if the lower partner spreads their legs. This is sometimes called the soaring eagle. The standing eagle variation adapts the spreadeagle to a vertical position. Typically the partner whose legs are spread is either pinned against a wall or stands on one leg and spreads the other. A variant exists that is easier for partners of different heights: one partner rests on the edge of a counter or bed with their legs spread while the other stands and penetrates them. Another vertical adaptation making use of furniture is the sofa spreadeagle: one partner stands on the edge of a bed or sofa or balances on two chairs and squats to allow for standing penetration. The legs are also spread during the lesbian sexual practice known as scissoring. These positions are classic ingredients in sexual roleplay. BDSM The spread eagle position is also employed as a bondage position in BDSM play, with the submissive fastened to a bed or a specially constructed table, sometimes face down. The wrists and ankles are typically either fastened with ropes or with bondage cuffs attached to straps. Alternatively spreader bars can be used to keep the wearer's legs or arms a set distance apart and produce a spread eagle position lying on the back or front. An X-cross, a stationary bondage frame in the shape of an X, is often found in BDSM dungeons. It is designed to position and restrain a submissive in a spreadeagle position, restrained at the wrists, ankles and sometimes waist. X-crosses are typically vertical if wall-mounted or lean back at a slight angle if freestanding, and hence they restrain the subject in a standing spread eagle position. Alternatively this can also be achieved using ropes or chains attached to different endpoints. A spreader bar suspended from the ceiling provides wrist attachment points for a vertical spread eagle position, either standing or hanging. A hanging spread eagle position is also used in suspension bondage, for which wooden or steel bondage rigs are sometimes found in BDSM dungeons. Spreader bars can also be used with subjects who are kneeling on all fours to give access to the buttocks, genitals