>>512432011 (OP)Circumcise them first. Allow them to heal and walk about for a few months. Then without warning, castrate them. Repeat. Some will give up, others will start to conceive of their new life and a way forward in it. Then torture and kill. This will produce lots of loosh and the Demiurge will bless you, and you will go forth and spread much misery forevermore.