Books like The Mustache

A man with a luxuriant mustache gets a wild hair and shaves it off.  He's had that mustache for many years, but no one seems to notice anything different about him.  When pressed, his wife, his friends, the people with whom he works, all maintain that he has never had a mustache.  Settle in as he begins to question everything in his life, watch as his mind starts to become unhinged, and then crack.  At the end, you will see that his fixation on his own facial hair is complete. My thanks to GR friend Betsy, whose review of this compelled me to search out a copy.