Butterfly guard is another great place to snag a guillotine. Wait until your partner is looking down toward the mat; this will often happen as a consequence of them getting ready to try a guard pass. As their head dips, use your left hand to guide their head over to your right side. While guiding, keep your left elbow in close to your body, like doing a Muay Thai clinch.

Once you've fed the head under your right armpit, snake your right arm through, just like the RNC version, making sure your right elbow is lined up with your partner's chin (but under it). Once your right arm is through, make an S-grip with both hands (turn your right palm up, your left palm down, and hook your fingertips together). This will facilitate your ability to rotate your left elbow up and over your partner's shoulders and back, ultimately making both an extremely tight blood choke, and a very, very difficult guillotine to escape.

To finish, allow your right foot to slip out from in between your partner's legs, and slide it across their hips, sort of like a backwards scissor-guard position. Finally, throw your left leg over the top of your partner's back, making a rolling escape all but impossible.