The Canine Excrement Effect : whereupon having stepped squarely into a fresh heap, the weary traveller experiences an epiphany and declares, "whether it's on my right foot or my left is irrelevant, it's foul and it stinks" then proceeds to perform an erratic twisting, sliding dance across the grass in an attempt to remove the muck, a small portion of which has become lodged between the sole and the upper, possibly permanently.