A vagina that is particularly infested with STDs and/or STIs. It may also omit an odor that can be detected from great distances. Some Doompussies may eventually grow teeth if not treated in a timely manner. They can be very dangerous and it is likely you will loose anything you put in or around its opening.
...this girl was givin me a lapdance but when she dropped her panties i could see the fangs coming at me from her DoomPussy...