Patch to simulate an increase in the thickness of the penis and/or to stimulate erogenous zones, applicable to simulate an increase in the thickness of the penis and/or to stimulate erogenous zones, comprising a patch (1) of various dimensions and shapes, characterized by: a waterproof and/or protective covering (3), a container or reservoir (4) that will contain the substance used for the simulation of increased penis thickness, an adhesive sheet (5) that will adhere the patch to the penis and a string (2) to remove the patch from the penis or from inside a body hole. (Machine-translation by Google Translate, not legally binding)