During the course of pleasurable anal activities, the impact is so great which causes a heat rash around the outer and inner regions of the anus. It causes the hair that grows around and sometimes inside the anus to burn away. In the worst case the flames go all the way inside the anus and it turns black.
by Friso July 20, 2006
When playing call of duty and in final stand a person shoots and it looks as if flames are projecting from the anus
by the one and only wrestler April 25, 2013