peeling the root

During fellatio, when the women/giver of said fellatio puts top and bottom teeth on the member at the bottom of the down-stroke and then drags the teeth down the shaft on the way back - giving the sensation that skin is being peeled like a potato

Had to put the brakes on last night - normally I like getting a BJ but she either has a small mouth or lockjaw because she kept peeling the root and it started to hurt!