When a man has sexual intercourse with a chicken or rooster (Preferably a rooster, hence the name) And when almost arriving at ejaculation, kills the poultry by breaking its neck, and then removing the head and inserting it into the anus for further stimulation whilst ejaculating as the beak still moves for few seconds after death due to it's nerves.
A Red Rooster provides much satisfaction for those with fetishes as a Red Rooster is a combination of Sexual Intercourse, Necrophilia, Beastiality, Rape and is generally just plain vulgar.
(Whilst on a farm)
Joe: Wow nice looking poultry bob, keen for a uh.. Red Rooster?
Bob: Why thanks Joey, ah w-wait what the-.. Get the FUCK outta my farm!