If you are on top in half guard and your opponent gets really low to where he is about to single leg you (both hands around your trapped leg)..... You push his head down and high leg your free leg over his head to where you almost have his back. And if he tries to get up after you high leg over, you end up being able to easily put him into a cricifix. Once a guy gets that low there really is nothing you can do so you might as well open some doors to where you have options. This might be a common reversal but today is the first time I was taught it and Im feeling it! Does anyone use this if the bottom guy scoots so low that you can't prevent the sweep?? Maybe someone has a video of this if I did a shitty job explaining it?