Will it hurt/damage my brain/nervous system and testicles if I shake/push my scrotum/testicles gently continously for many times?
Worrying about it obviously does more damage to your nervous system than gently manipulating your testes. Testicles move around all the time. They are pretty good at it. Your testicles are NOT identical. One will be dominant. It MAY have more veins or more obvious tubes than the other one. This is O.K. Stop worrying about it.
Should be harmless. No idea why you'd need wet wipes to handle your own scrotum. Can't give yourself a disease.
It already has.
no it won't
no, doing that would indicate that your brain / nervous system is already damaged. So the nut punching would be a symptom, not a cause.
It wont damage your brain (the nerves can heal back if you mess them up). It probably wont mess up much...