Similar to fisting but using both hands inside the orifice of choice and mimicking washing your hands with soap or such.
That girl was so loose I finally got to use the handwasher last night!
A sex move performed on females, where the other participate makes the awkward turtle* with their hands, but closes the fingers over top of each other to create an almost a fist, and turns to a 90 degree angle and proceeds to penetrate the vagina with the fist, while rubbing the clitoris and anus with the thumbs.
*For those who don't know the awkward turtle is made by putting one hand on top of the other, palms facing down with the thumbs pointing out the side, and rotating your thumbs as if they are flippers.
I cant wait to use this new turtleing sex move man!