For most people the occasional hand job doesn't do any harm, but friction related issues can arise if excess hand jobs are applied. The skin of the penis is worn away and in some cases your penis disappears completely. So, to avoid this happening make sure that you don't have it done to often as this can be detrimental to good penile health. To avoid this use a quality lubricant from reputable companies such as BP and Shell which are engineered for minimal friction and heat.
Do more and more Hand job with yourself..
Because men have Penises... period.
Good salty feelll good
Male sheep have penises which they use for mating. When you apply some pressure with your hand at the rear prepuce, the penis will protrude.
Feels good.
penises
Hand jobs have absolutely nothing to do with growing height.
you can babysit or farm hand for 10 $ hours
some monkeys have penises
Free hand-jobs.
The real question is who invented hand jobs?
see pink penises would be good