When the woman places one of her legs on her lover's shoulder, and stretches the other out, and then places the latter on his shoulder, and stretches out the other, and continues to do so alternately, it is called the "splitting of a bamboo".
This position is all about communication and movement with great rewards
Bouncing with one leg up on your man's shoulder feels great, but the magic happens in the switch
By coordinating your leg movements with your lover, you will both be treated to a unique squeezing rotational friction as you go from shoulder to shoulder
Face to face communication is essential and erotic