I have seen the name a few times, but don't know it.
I think it's another name for the butterfly guard. It's where you have both feet (hooks) inside your opps legs.
Oh, I thought it was something else.
There are tons of different names for the same thing. We call an elevator sweep a hook flip. Seems like every coach comes up with new names for moves. We even have a grip called the "happy puppy dog". My coach was trying to describe how to hold your hands and said it looked like a happy puppy dog. He then tried to change it to the snake grip to make it sound cooler but it will always be the happy puppy dog to me. :)