As far as your balls actually turning blue...No.
When a man becomes sexually aroused, blood flows into his penis and testicles (or "balls"). If he ejaculates, the blood flows out of his genitals — and back to the rest of his body — more quickly than if he does not ejaculate. The discomfort a man can feel when he has been sexually aroused but has not ejaculated is sometimes called "blue balls."
Although blue balls can feel uncomfortable, the discomfort goes away fairly quickly. If a man is extremely uncomfortable, he can masturbate (or ask his partner to masturbate him) to orgasm. However, there is no danger and no pain if he does not reach orgasm. So, guys who say that they are really suffering and must have vaginal intercourse to relieve their "blue balls" need to know that they can relieve their discomfort and ejaculate using other sexual activities.
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