have a thick skull

have a thick skull

1. To be dim-witted, stupid, or an especially slow learner. I've always had a thick skull when it comes to math.
2. To be inflexible or stubborn; to be overly willful or obstinate. Our son has such a thick skull. Once he's made up his mind about something, there's no way anyone can change it!
3. Literally, to have an especially dense skull, often said humorously after receiving a mild blow to the skull. A: "Oops! Sorry, I didn't mean to hit you!" B: "It's OK, I have a thick skull!"
See also: have, skull, thick
Farlex Dictionary of Idioms.
See also:
  • have a thick head
  • thickheaded
  • out of a paper bag
  • (one's) way out of a paper bag
  • (one's) way out of a wet paper bag
  • couldn't find (one's) way out of a paper bag
  • airbrain
  • airhead
  • not the sharpest tool in the shed
  • not the sharpest pencil in the cup