standing on one's head

standing on (one's) head

With very little or no difficulty; in a relaxed, carefree, or effortless manner. It took me a little while to get used to this job, but now I could do it standing on my head! You should ask Johnny for help—he does this level of math standing on his head.
See also: head, on, standing
Farlex Dictionary of Idioms.

standing on one's head

see under do blindfolded.
See also: head, on, standing
The American Heritage® Dictionary of Idioms by Christine Ammer.
See also:
  • standing on (one's) head
  • with (one's) eyes closed
  • with (one's) eyes shut
  • with eyes closed
  • with your eyes shut
  • with your eyes shut/closed
  • could (do something) with (one's) eyes shut
  • do (something) standing on (one's) head
  • do something standing on your head
  • be able to (do something) in (one's) sleep