Two Knees, One Spock

Start with both hands and a heel hook on the shelf. Move up and right to a sidepull, then a good knob. The crux is very weird: get both knees on top of the shelf, then plug in a left hand spock in the crack system. It is an easy topout from there. I haven't found any easier way of doing it... but maybe it's just fun to try such a bizarre move.