Question for guys - do you have to ejaculate/cum/orgasm every so often for healthy balls ?

More curiosity that anything. I find if I don't masturbate for a long time (like months) it seems to make for a really strong explulsion of jism than if I last did it yesterday or in the last few days or in the last week, but is that because the balls are 'full' and need to be 'emptied'?

What happens to sperm when they are disused - does the body 'eat' them back up? I can't see the fishes existing for a lot of years each before they go away.