I imagine that one dude, a very long time ago, got way too drunk on honey wine, wandered out into the desert and passed out next to the exposed bones of a long dead dinosaur. The ribs were large enough that the Sahara sun only gave him sunburns in stripes across his dehydrated body, and that when he arrived back at his village, stripe-ed and hungover, he professed the love and protection of the giant snake god with legs.