Well one interesting move that I learned eons ago was (proper name escapes me) "leg - sissors". Because of the fact that I walk an average of 5 -8 miles a day or more and hike mountians on the weekend, rappel and ascend 200-300 foot deep pits/shafts, my legs don't have an ounce of fat on them. Thus since 99.9999% of all fights go to the ground anyway...beware, if I get my legs on either side of you and manage to cross the ankles to lock...
But I've always wondered if that is a legitimate MA move, if so what art/style.
I can manage to keep my face and other vitals well away from flashing fists and such and like a boa if my (now victim) struggles harder I just squeeze harder.
I learned this maneuver when I was a kid trying like hell to beat up my older brother who was happily beating up on me. I managed to get my legs around him during one fight and voilia... older brother learned to studiously avoid letting me do that again.
I know it's a good move and a successful one if you got the power in the legs to pull it off... but is it a legitimate move as far as MA is concerned?? hmmm