Sex toy comprising a hollow container (1), a first inner element (2), a second inner element (3), some protrusions (4), a long pitch screw (5), means for moving the long pitch screw (5) and two lubricant systems with substances acting at body temperature the container (1) being cylindrical in shape with an open end the first inner element (2) being a flexible sheath the second inner element (3) being located between the first inner element (2) and the walls of the container (1) the free extremities of the second inner element (3) touching and sliding on the first inner element (2) imitating the action of the mouth the protrusions (4) extending inwards from the wall of the container (1) the means for moving the long pitch screw (5) allowing the movement of the first and second inner element (2, 3) in respect to the container (1).
