Head Scratcher Meaning

Example : A device used to scratch the head.  2004, Kelley Hays-Gilpin - Ambiguous Images: Gender and Rock Art (ISBN number 0759100659) page 133.  Her aunt's husband or her grandfather brings a head scratcher. "If the maid scratched her hair or body with her fingers during these days of observance, her hair would fall out."December 2007, W:Daily News Tribune - Golden Globes nominations a head-scratcherJuly 2002, Fox News - Attorney: Williams' Kids Near Compromise About Father's Remains  "A judge will decide what is the most logical, although I'm sure to some judges [freezing the body] will seem like science fiction and a wild scheme," McDonald said. "Other judges make think this is a good thing. It will be a head scratcher for the judge."