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. © 2015 Farlex, Inc, all rights reserved.

standing on one's head

see under do blindfolded.
See also: head, on, standing
The American Heritage® Dictionary of Idioms by Christine Ammer. Copyright © 2003, 1997 by The Christine Ammer 1992 Trust. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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