Mule-kick BH is the most common term applied to this. Also referred to as a jumping BH. Scissor kick is a maneuver that is a bit different (used for moving back and upward for an overhead smash). I've used the the mule-kick for 1-handed BHs and for high sliced Fhs as well as for the 2HBh.
If u have one foot stuck in yesterday & one foot stuck in tomorrow, u are peeing on today.