Abstract: A dildo having a shaft and an arrangement for heating the shaft to a temperature which provides improved sexual stimulation to a user. In one embodiment the heating is provided by a charge of heated liquid contained in a cavity within the shaft. The liquid is heated externally and then put into the cavity, or in another embodiment it can be heated within the cavity by a coil of electrical resistance heating wire. In another embodiment a wire coil embedded in the shaft material is heated by electric power.