Superior Existence

They come from a leathery, egg-like object
 Covered by a blueish layer of moist and warm mist
 A strange organic parasite shooting out
 Hugging your face and wrapping it's long tail around your chest
 Irremovable and if cut, it's bleeding acid
 Implanting an embryo, through your mouth, in your chest
 Now you are the host, incubating parasite offspring
 When strong enough, cracking your chest and jumping out
 Growing up fast and casting it's skin off, several times
 Fully grown now and ugly like hell
 Having no eyes but a double set of teeth
 A long tail to rip you apart
 When opening it's mouth, showing you it's teeth, an extra pair shoots out
 Taking a bite from your skull
 Killing all life form
 Whether it's to eliminate, or to incubate the queens eggs