Sloppy Marathon Share definition Flag When ejaculate bursts from a person and lands upon the interior surface of ones athletic shoe or sneaker. Ryan went to put on his shoes and realized he had been a victim of a Sloppy Marathon. Sloppy Marathon by jack the ripper April 11, 2012 0 0 Get merch Get the Sloppy Marathon mug. Buy Now — $32.95 See more merch