(as) thick as mince

(as) thick as mince

slang Remarkably stupid, dimwitted, or obtuse. Primarily heard in UK. Jen's new girlfriend is very nice, but she's thick as mince. The MP was caught on a hot mic calling his colleague "as thick as mince."
See also: mince, thick
Farlex Dictionary of Idioms.

thick as mince

mainly SCOTTISH
If someone is as thick as mince, they are very stupid. No point in expecting any real help from her department — most of them are as thick as mince. Well, what do you expect? She's as thick as mince.
See also: mince, thick
Collins COBUILD Idioms Dictionary, 3rd ed.
See also:
  • mince
  • thick as mince
  • be (as) thick as a brick
  • be (as) thick as a short plank
  • (as) thick as a brick