The standing 69 position is a challenging variation of the traditional 69.
The best way to get into this position is to start with the stronger, heavier partner sitting in a chair or bed. The lighter partner then puts their head into the lap of the heavier person. The heavier partner can then maneuver the lighter partner into an upside-down position. Both heads should be between the thighs of each partner. When in this position, both partners should wrap their arms around the other's waist. From there, the heavier and stronger partner can then stand up, completing the standing 69 position.