Mole fur has no nap. This means that it does not lie in any preferred direction against the skin. Presumably, this is useful if the mole has to reverse direction within a narrow tunnel, an act which would otherwise lead to a very bad hair day indeed. Moles have proverbially poor eyesight, so at least they wouldn't laugh at each other. It still wouldn't be very comfortable, though.
Fortunately, due to the naplessness, the above scenario never takes place-- moles are immune to this particular social embarrassment, and secure in the fact that it is, as the source article puts it, "...literally impossible for a mole to be rubbed the wrong way."
Source : Discover Magazine; http://discovermagazine.com/2013/september/15-the-urban-bestiary#.Uk7BUNJzHVo
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