Can a man have an orgasum without balls?

A man who has been castrated, that is having his testicles removed either voluntarily to be an eunuch or due to medical reasons such as due to cancer, may well achieve an erection and even orgasm since the semen is produced by the prostate gland however don't expect him to father a child since he has no testicles to produce the sperm. He is not dickless but he has no balls!