A little word of warning to all men. If you are going to DIY 10 metal balls in your penis to improve your sex life make sure they don’t rust…just saying. Some Malaysian guy did it and all went well except for the fact his penis swelled for three days and he was exteme pain but then once everything had settled all was good . Fast forward a few months later and then kapow, he could no longer get an erection. Awks. When doctors removed the balls they discovered they were all rusted.