Painal: http://www.xvideos.com/tags/painal

Figging: http://www.xvideos.com/video112115/art_of_figging

There is a BDSM clip floating around where the Dom used a piece of ginger root that was too small and improperly shaped and the chick was clenching and unclenching so much from the burning sensation that the ginger root got sucked inside her and they couldn't get it out. I couldn't find it. The dude and the girl both start rooting fingers around in her ass to try and dig it out. It was amusing.

People also cut/shape a small piece of fig to place on a woman's clit. It creates a moderate burning sensation as well but some people claim that after the root is removed that it increases the sensitivity of the clit and makes it easier for the woman to achieve orgasm(s) for a short time.