(as) sharp as a steel trap

(as) sharp as a steel trap

Able to understand or grasp information quickly. David's as sharp as a steel trap, so if you give him the instructions, he'll follow them perfectly.
See also: sharp, steel, trap
Farlex Dictionary of Idioms.
See also:
  • steel
  • have a mind like a steel trap
  • mind like a steel trap, have a
  • have a mind as sharp as a steel trap
  • on the uptake
  • a bit obtuse
  • be quick on the uptake
  • within grasp
  • cotton on to (something)
  • cotton on