A kobold is a common creature, most known from the popular game "World of Warcraft". A kobold steamer is a reference to the furry mane of a kobold combined with a steaming hot deuce. The two combine to form a furry "lubricant" causing pleasure for both the male and the female, making this a very pleasurable maneuver.
Oh man, Ryan! I totally laid a phat Kobold Steamer on some chick's furry mane!