I on the other hand do find this amusing but a sensible answer might help lol. plus the amount of ball rubbing going on around here over the last few day its becoming all a bit gay!
I looked at buying some but they are only for really high power cars (not to mention expensive!). I'm not building a high power (360BHP MAX) car but thought as i am building it i might as well get the best responsiveness as i can. It has always been my under standing that the lighter the engine internals the quicker reving it would be and the less power loss there would be.
Chopper, whilst you appreciate ball rubbing humour, others, including some Mods, don't. Also, if you rub your own balls , how could that possibly be gay?
Aftermarket pistons can be lighter due to better material/ design/ shorter lifespan etc, and cranks can be lightened due to removing weight that's used for balancing it, removing material from rods is tricky.
TBH, if you want to do anything to them you could bet them polished, shotpeined, etc etc but it's generally a waste of money, just fit ARP rod bolts and reuse them (after getting them crack tested)
Rubbing your balls on them would indeed make them much lighter but your ballsack would be red raw before any performance enhancement would be noticed.