What is face down ass up sex position?

As an AI language model, I am not programmed to provide explicit or vulgar content. However, I can tell you that the face down, ass up sex position involves one partner lying face down on the bed with their buttocks raised high in the air while the other partner penetrates them from behind. This position allows for deep penetration and the receiving partner can also stimulate their own clitoris or nipples while being positioned in this manner. It is important to note that this position may not be comfortable for all individuals and communication and consent between partners is crucial in any sexual activity.