maybe this will help http://www.heatherfirth.com/ my ex had that same problem she would use sticks and cylindrical quartz stone to get off....it was to weird for me ...which is why she is my ex...anyway she was always at that website
I think it's fucked up man!!! If they do a damn tree or rub rocks all over themselves wtf else are they capable of doing....MY SOULTION = JUMP OFF A BRIDGE IF YOU RUB ROCKS ON YOURSELF OR FUCK TREES!!! IF YOU LIVE THEN ROCK & TREE FANTASIZING ARE MEANT TO BE IF YOU DON'T THEN YOU WERE A BAD EGG FROM THE BEGINNING AND GOD NEEDS TO TAKE YOU BACK UP AND MAKE SOME CHANGES......