A society in which cummodities and the means of ejaculation are collectively owned. In such a society, no one can deny his fellow citizen the right to jack him off on the grounds that he alone owns his penis; given that his penis would be collectively-owned, everyone would have the opportunity to wank his neighbor, free of charge (though certainly not "discharge").
This system is sometimes known as "Commujizm."
"I much prefer cummunism to fapitalism; I believe that such a society would allow for a much more egalitarian distribution of cum. What do you think, cumrade?"
"Cummunism looks good on paper, but has never worked in reality; it is simply not in humans' nature to equitably distribute semen amongst the various classes of society, and the Tragedy of the Cummons poses a significant obstacle to any society that hopes to implement it effectively."
"The problem with cummunism is that eventually you run out of other people's semen."