Blue balls is a slang term for a temporary fluid congestion in the testicles and prostate region caused by prolonged sexual arousal in the human male. It is most commonly associated with adolescents but can occur in any sexually mature male. It is often accompanied by a cramp-like ache of prostatic congestion and pain/tenderness of the testes.
Men with priapism or orchalgia may experience an extreme, prolonged form of blue balls, which may require medical attention.
Orgasm does alleviate blue balls.
The Blue Ball Machine
If aliens (from another planet) found on earth only a laptop opened to a google image search for the key words blue balls what would they think of us?