crayon-eater

Noun

crayon eater (plural crayon eaters)

1. (derogatory, slang) An unintelligent or mentally disabled person.
   • At least one thread devolved into a bunch of crayon-eaters arguing over whether a pistol would really “burn like that”, whether a Glock or an XD would burn harder or melt faster.2014 September 5, David Reeder, “Friday night gun porn – wait…what?”, in Recoil (magazine)

   Synonyms:

   meathead, mouth breather

2. Used other than figuratively or idiomatically: see crayon, eater.
   • The department concluded its report with a suggested treatment for crayon eaters.1951 February 3, “Dyes Do It: ‘Blue Baby’ Crayon-Eating Case Solved”, in Los Angeles Times, volume LXX, Los Angeles, Calif., part 1, page 2, column 3