Cum Nazi
Cum Nazi is a "catch all" term for an entity, situation or item that stops the delivery of ejaculatory fluid in any capacity or uses lack of sex as forfeit. For example a prophylactic could be referred to as a Cum Nazi, or a female who is punishing a significant other by withdrawing copulation.
Can also be a term for a more serious form of cock block.
Can also be a term for a more serious form of cock block.