An apparatus for assisting in copulation and preventing discomfort due to testicular retraction or displacement (e.g., retractile testicle) during copulation and other activities is disclosed. The apparatus substantially encompasses, circumferentially, the upper portion of the shaft of a penis without constricting the urethra area at the base of the shaft of the penis. The apparatus further conforms to the torso behind the scrotal sack (i.e., between scrotum and torso) to prevent undesired movement of testicles into the abdomen area. The apparatus has a substantial U-shape, the legs curving inwardly toward respective anchoring nodes. Anchoring nodes may be included at the end of each leg of the apparatus to assist in minimizing movement of the apparatus while in use. The apparatus may rigid or may be slightly flexible and, when in use as a copulation aid, provides pressure to restrict outflow of blood from corpora cavernosa thus assisting to maintain erection.