A marathon runner shocked onlookers when his penis slipped out during the race.

Marathon blunder

Marathon blunder

Jozef Urban finished in tenth place during the Košice Peace Marathon in Slovakia over the weekend, but as the sportsman was coming up to the finish line his entire manhood slipped out of his running shorts and was shaking around uncontrollably.

Jozef was unaware he had exposed himself, but onlookers looked on in shock, whilst others ignored the incident and continued to cheered him.

Footage of the moment the athlete flaunted all has been obtained by the Mirror Online, and captures one steward trying to help him conceal his modesty when he bends over to catch his breath once he crossed the finish line.