Abstract: A stimulation enhancement device includes a generally elongate main body portion having predetermined length, width and thickness, and defines an upwardly-facing surface and an opposing downwardly-facing surface. The downwardly facing surface is generally flat and said upwardly-facing surface is provided with a plurality of generally transverse protuberances spaced from each other along the length direction of the main body portion and that rise above the upwardly-facing surface. The downwardly-facing surface of the device may be positioned on the upper surface of an erect penis and, when maintained thereon, effectively increases the girth of the penis while the protuberances are effective to provide enhanced vaginal and clitoral stimulation.