Gile Huni, editor of and instructor at Kimura BJJ Serbia shows a sneaky and quick set up for a footlock off a knee slice. Gile is speaking in Serbian in the video, although the main points are to put pressure on the opponen’t hamstring so that they lift the leg, then pick up the foot, grab you own gi lapel, smash the toes with your tricep to make a twisting footlock, and go belly down with forward hip pressure. Very painful!