O.K, i was trying recognize the fact that you do have STUPID friends, i dont know if that can,or cannot affect sperm, but there is good reason there nicknamed family jewels,one of the reasons is that there precious,so you gotta keep them safe! go to doctor and ask for a sperm count. (man i'd like to take a picture of a doctors face while he hears of tabasco on someones nuts, but i CAN assure you people did more idiotic things then that, in the movie "jack-as*" they tied a rock to there stones,and dropped the rock off a bridge,now i think it would be right to call them numb-nuts" after that)
there is some help in fertility issues,so if the count is low dont jump yet.
if the count is zero, that might be due to a birth defect,like being born without the "vas defrens" (dont know if spelled that right) , if so it still might be o.k, you can find a nice doctor to shove a needle in your testis, and suck your sperm out.
now about your scrotum ( your balls rest in there) there's this liquid there ( i vaguely remember reading about this so you really should look it up) there's this kinda circulation where it gets absorbed by your testicles (again dont take my word for this!) i think the absorption helps sperm production, or something.
but i can say that a guy my father plays B-ball with came over to the court one day walking weird, turned out he forgot to wash he's hands after putting Ben-gay on,the thing is he went to the bathroom to pee...
pardon the pun, your nuts!
i'm gonna hold my tongue from responding.