Vagina is a simulator of female genitals sometimes equipped with vibrator or pomp.
Oral Simulator is a sex toy imitating mouth and creating the oral sex effect. By its functional features oral simulator is similar to vagina.
Nowadays sex shops sell sex toys with vibrating and sucking functions; therere also simple self-driven toys, non-visual-effect toys and toys imitating all female genital details: vulvar lips, anus or pubic hair.
Man experiences real bright sensations while using vagina, since the penis is actively massaged by vaginal walls. Moreover, if vagina is equipped with soft knobbles or ribs and vibrating or sucking mechanism, the man gets incomparable orgasm.
Vaginas and oral simulators create double effect: first diversity in sexual life, second physical and psychological unload of organism. Both men and women may have psychological disorders as well as overstrain or alcohol overconsumption problems, which may cause temporary asthenia or even importance. Importance also depends on prostate condition -approximately 40% of men after 40 suffer from prostatitis. And again artificial vagina will be of great help...