Prostate massage
One of the "rejuvenated massage" for the mature generation in the 100th generation of life where "erection force" falls.
Prostate massage, in general, is still minor yet, so it can be said that it is for people with a strong spirit of challenging to challenge the "new ground" after becoming a mature generation.
The day you will apologize to the prostate, which you've been trying to ignore until now, will be close to the "customer who challenges" to the "new ground".