She tells me that it is good for that part of the body. She also tells me that rubbing vitamin E and A and raw eggs on my testicles will strengthen and give me what I need to stay healthy and sexually active. I can say that it does arouse me but I would like to know if it is safe.

These are natural substances and in my opinion, and let me stress that it is only an opinion as I am not a medical doctor and don't know for sure, that they would not do any harm. The one caution that I would give is to be careful not to get any of these ingredients down into your urethra. I'm fairly certain your skin would protect you from any minor harmful effects, but since these substances wouldn't normally be found inside of your penis, the same type of protection might not exist on the inside. Certainly it would be very hard to clean inside of your penis and any of these substances might make a good breeding ground for bacteria.