(as) clever as a wagonload of monkeys

(as) clever as a wagonload of monkeys

Impish or mischievous. ("Cartload" can be used instead of "wagonload.") Primarily heard in UK. Don't let those boys sit together—they're as clever as a wagonload of monkeys.
See also: clever, monkey, of, wagonload
Farlex Dictionary of Idioms.
See also:
  • clever
  • clever clogs
  • clog
  • clever boots
  • of
  • spark
  • a bright spark
  • bright spark
  • be boxing clever