Skuhdouching is a verb, it is a action one does when wearing socks and moving their feet (kind of like iceskating) in a crazy fashion without removing ones feet from the floor. Skuhdouching usually takes place on hard, smooth surfaces, i.e. hard wood floors, tile or anything smooth and you are able to glide on.
GO TRY TO SKUHDOUCHE!!! it's really the only way to explain it. you'll find yourself skuhdouchin all day!