Occurs while a male in the depths of slumber attempts to roll over but is unable to do so due to his wang acting as a kick stand preventing his body from fully completing said action.
The act of leaning forward whilst taking a shit that comes out in ball-shaped projectiles which tend to splash toilet water forcefully upward at one's scrotum and into one's anus; leaning forward to avoid such a splash.
City friend: how do the cows stand straighton the hill side like that? You: There a Leanto cows "Lean-two" there legs are shorter on one side so they can stand straight and not tip over.