Zapping the penis could prevent premature ejaculation.
A man who underwent the therapy was able to last seven times longer in bed after ejaculating within 40 seconds prior to the treatment.
The Lebanese man had electrodes stuck onto his penis for 30 minutes at a time three times per week.
Six months after finishing the treatment, he was able to pleasure his girlfriend in the bedroom for almost five minutes before he climaxed.
Doctors in Beirut have called for studies to determine if the device can be rolled out as a safe and drug-free treatment for patients suffering from premature ejaculation.
Whenever the man underwent the zapping therapy, he had two electrodes placed on the surface of his penis. One was placed at the bottom of the organ and the other was placed 2cm higher up.
Over the course of six months, his penis was exposed to a continuous current across three 30-minute sessions each week.
Doctors did not say whether the treatment was painful, but analysis of similar devices said they can be used "without discomfort".