Moon Loping is a form of legged lunar locomotion performed by humans on the natural Earth satellite (the Moon) where the human propels itself through a space above the lunar surface along a ballistic trajectory with relatively long duration of the floating phase.
Lunar gaits page
gives the following description:
Most of the astronauts on the later missions favored a loping gait in which they still alternated feet but pushed off with each step and floated forward before planting the next foot. Ed Mitchell of Apollo 14 and Gene Cernan on Apollo 17 favored a skipping stride in which they kept one foot always forward, let's say the left and, as they landed, hit with the trailing foot just a fraction of a second before the leading foot, pushing off with each foot as it hit and launching into the next glide.
Same source quotes Armstrong's explanaition:
Armstrong, from the 1969 Technical Debrief - "I can best describe a lope as having both feet off the ground at the same time, as opposed to walking where you have one foot on the ground at all times. In loping, you leave the ground with both feet and come down with one foot in a normal running fashion. It's not like an Earth run here, because you are taking advantage of the low gravity."
I'm not 100% sure, but it looks like there's moon loping demonstrated at 4:47 in this video: