blueball means: 1. In reality, it is bringing a man close to the climax where his testicles are filled with seminal fluid, semen and other substances, without allowing him to get rid of any sexy juices. This causes severe discomfort and pain that can last for many hours. Also see the blue ball 2. It’s an expectation of the outcome, and a lot of work, that leads to disappointment. (in Community Dictionary, added by Celia Ramos)
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