The man reportedly injured his penis on the crossbar of his mountain bike.
The injury caused blood to keep rushing to it, creating a priapism - a perpetual erection.
For reasons that have yet to be revealed he only went to hospital seven weeks later.
According to the Irish Medical Journal it required gel foam and tiny platinum coils to finally make the tumescence subside.
It was an anxious time for the patient as it would be for any young man.