A device for sexual stimulation of the human body, the device including a phallus-shaped stimulation body. The thickness and/or the length of the stimulation body is variable in regions. The stimulation body has a preferably exchangeable stimulation element to permit the regional variation of the thickness, and the stimulation element is movable in the direction of the longitudinal axis of the stimulation body and/or in the circumferential direction of the stimulation body. The stimulation element expediently has at least one magnetic holding device, preferably a permanent magnet, and at least one magnetic carrier for the stimulation element is arranged movably inside the stimulation body.