Professor Lucas Lepri teaches how to get an arm triangle or one arm guillotine, after escaping from the opponent using the butterfly guard to attack. The opponent has the butterfly guard on Lucas and starts to elevate him. Lucas maintains his balance. He starts to escape by lowering one knee and immediately circles that leg out. He drops his knee over the opponent’s leg and places it on the mat. In this scenario, the opponent has the neck exposed. So Lucas immediately slides his arm over the head and cups the chin. He falls forward and gets the arm triangle. If he is not able to get the arm triangle, then he rolls back and finishes with the one arm guillotine.