When an rectum is so stretched out from anal sex that you can shine a flashlight inside and see terds.
by John December 26, 2003
asscave was the original image of a woman's gaping asshole, scattered with nearly a dozen clitoral piercings, while her rosey red fingernail polish shined brightly on her hands that were spreading her ass. this legendary image was found years before goatse images started even appearing. a quick google image search for this name should produce results.
by grindking September 13, 2007