Abstract: 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).