shitkicker

noun4

1. •
   [usually plural] (slang, vulgar) A workboot.

   • I saw a tomboy wearing a pair of shitkickers.
2. •
   (vulgar, offensive) A poor, rural person, especially from the southern United States.
3. •
   (vulgar, offensive) A crude, violent and/or uncivilized person; a barbarian; a heathen.
4. •
   (slang, vulgar) Something unusually unpleasant or difficult.

   • I have a shitkicker of a headache.