From the blog "Donnerwetter's Mod Archives"

MOIST.mp4       This one will require some assembly in a program such as paint.net to apply it on a specular map of your choosing. I also painted it on BHUNP, so it might need some slight moving around to to place it properly on 3BA. I recommend playing around with opacity too, as it will simply be too bright copy pasted onto a specular map as is.   moistbutt2.7z   GLISTEN.mp4