Anyway, I once took up this sport... I mean I tried it a few times. Didn't like it that much. And that time, there was only one cute chick who was graceful at traversing the wall.
But I remember the first time I tried it at Power Up in Pasig with my officemates.
After not finishing a wall, may legs were shaking. According to the guys, you call that phenomenon UME-ELVIS because your legs are so shaken, you actually do a "dance" similar to Elvis Presley's signature move.