This was a case of deliberate premature ejaculation, not masturbation.
Or was it a case of withdrawal-- a form of birthcontrol (albeit a not very effective one), ie, malthusiamism?

Wasn't it the Shakers who disappeared because they eschewed intercourse? They probably never heard of Malthus!

There is a small community south of Portland, Oregon called Wanker's Corners. When the power goes out there, they fire up their generators made by the Onan Corporation! Yes, there really is such a company!

Now, to quote the Biblical Onan, "Oh! Oh! I'm coming!" Onan ejaculated.