A survival technique enabling two women to start a fire using nothing but their vaginas. Both women must be without cloths and pressed against each other in a scissoring manner. They then must rub, hump and grind their womanhoods together causing a rather tremendous amount of friction. This can sometimes take a while but if done correctly over a dry pile of tinder, a single spark can produce a roaring fire.

...After our canoes flipped and all of us were soaked to the bone in below freezing temperatures, I thought we were all doomed. Luckily, Mother and Aunt Joan knew exactly what to do and wasted no time. Within minutes they were producing enough smoke to send a signal for help and finally after a few sparks came off of them we were able to start a fire big enough to keep all of us warm and dry untill help arrived. Tribbing saved my life and the lives of those I love.