Fren, I once Masturbated too frequently till the testicle hurts,
something hurt inside, koz when ejaculate there's trhis small brown
platlet stuff come out, so i go ask doctor, doctor say sometimes
our sperm in testicle is not fully loaded, when the duration is due
it wil leak out during nite, or with urine, will be kinda empty
then, so if you negh negh want to masturbate and burst sperm out,
gonna hurt the engine inside. So make sure when u wanna Masturbate,
make sure you ate egg or somehting the day before, hehe ...... good
luck.
Oh ya, on my case, I stop Masturbating for about 2 months for the
ball to cure, damn hectic man !! 
