A good climb with a technical crux down low, perhaps 2 bolts up, and then on pumpy pockets the rest of the way up with some big moves. Which feels harder to you depends on your skills set. The route was commonly done in flip-flops or hiking boots.
The name of this climb, I believe to be a not-so-subtle euphemism... either that or there was some moss in a pocket in the early days. Regardless, I doubt the latter was the sole motivation behind the route's name.
From the left branch of the approach trail, you first encounter the "triplet" climbs, Sunshine, Moonbeam, and Into the Light. While these are at your right shoulder, you can look further on to the routes on a massive overhanging buttress. These are (from right to left) Fuzzy Undercling, Tissue Tiger, Gung Ho, and Reliquary. To the right of these, there is a huge, wide inset with a single bolted line up a slab on the left side, Possum Lips.