i think i saw LA doing that or somthing. even if its new, theres no way im calling it (ur name) knee stall. its just a sitting kneestall.
and im sure lots of ppl tried it, i tried it just the other day, it doesnt really rest on the knee, its rests above it and in that little gap between the muscles if im not mistaken. looks ok, more like an LP trick stunner sort of thing.