plunging the straw through the skull of another gorgon and imbibing green dreams , the oneirophage dreamt that his body parts were all snakes , his head the head of a gorgon , his fingers and toes rattlesnakes , his twin penises a boa constrictor and a cobra , his intestines an anaconda , his tongue a black mamba , his lungs sidewinders , and his circulatory system serpentikal himself .