Last night in ninja class, our instructors taught us how to do a triangle choke with your legs from an on guard (on your back) position. Two of our male instructors demonstrated the position, which involves one person laying on their back with the other straddling them, and I swear to god I saw some of my classmates' faces light up in what can only be described as yaoi fangirl glee.
theladyscribeand I practiced against one another, grappling and trying to wrap our thighs around the other's head in order to choke off the blood supply to the brain. At the rate we're going, we're going to be a matched set of Black Widows before long!