could (do something) standing on (one's) head

Is able to do something with very little or no difficulty, or complete or accomplish something 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 could do this level of math standing on his head.

can do something standing on your head

If you can do something standing on your head, you can do it very easily. All the secretaries here can do the job standing on their heads. She has been playing gigs for so long she can do it standing on her head.

See also: can, head, on, something, standing

Collins COBUILD Idioms Dictionary, 3rd ed.

See also:

able to do (something) with (one's) eyes closed
able to do with eyes closed
able to do blindfolded
able to (do something) blindfolded
able to (do something) with (one's) eyes closed
able to do (something) standing on (one's) head
a/the feel of (something)
(I) wouldn't (do something) if I were you
a straw will show which way the wind blows
a crack at (someone or something)

词组	could (do something) standing on (one's) head
释义	could (do something) standing on (one's) head could (do something) standing on (one's) head Is able to do something with very little or no difficulty, or complete or accomplish something 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 could do this level of math standing on his head. See also: could, head, on, standing Farlex Dictionary of Idioms. can do something standing on your head If you can do something standing on your head, you can do it very easily. All the secretaries here can do the job standing on their heads. She has been playing gigs for so long she can do it standing on her head. See also: can, head, on, something, standing Collins COBUILD Idioms Dictionary, 3rd ed. See also: able to do (something) with (one's) eyes closed able to do with eyes closed able to do blindfolded able to (do something) blindfolded able to (do something) with (one's) eyes closed able to do (something) standing on (one's) head a/the feel of (something) (I) wouldn't (do something) if I were you a straw will show which way the wind blows a crack at (someone or something)
随便看	see somebody right see somebody/something for what they are/it is see someone coming see someone off see (someone or something) in a new light see someone right see (someone's) point see (something) against (something else) see (something) a mile off see something a mile off see something coming see (something) coming see (something) through see (something) through rose-colored glasses see (something) through rose-coloured spectacles see, spot, smell, etc. something a mile off see stars see that is done see that it is done seethe see the back of see the back of (someone or something) see the color of money see the color of (one's) money see the colour of somebody's money