with an arm tied behind (one's) back

with an arm tied behind (one's) back

Easily or effortlessly; encountering no difficulty or resistance (while doing something). Are you kidding? Montgomery is a powerhouse boxer. He'd knock that kid out with an arm tied behind his back! Oh, please, I could beat you in a game of chess with an arm tied behind my back.
See also: arm, back, behind, tie
Farlex Dictionary of Idioms.
See also:
  • with one arm tied behind (one's) back
  • with one arm tied behind one's back
  • with both hands tied behind (one's) back
  • do something with one hand behind your back
  • with one hand behind your back
  • with one hand tied behind (one's) back
  • with one hand tied behind back
  • with one hand tied behind your back
  • who am I kidding
  • kid