this humans have killed me o, so here I come"

What is with cockroach and dieing upside down? Is it in their constitution or just their nature. Anytime I see a dead cockroach, its legs are always facing up. Is it that when they are about to die, they turn to see who they offended that is so wicked enough to spray insecticide on them??
Or maybe they turn their bodies to tell God "father, open and follow here with google plus