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

To do something with very little or no difficulty; to 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 does this level of math standing on his head.

Common Names:

Name	Pronounced	Usage
Dorete	-	Danish
Filipe	fee-LEEP, fee-LEE-pə	Portuguese
Leoncio	le-ON-thyo (Spanish), le-ON-syo (Latin American Spanish)	Spanish
Bartel	BAHR-təl	Dutch
Jed	[dʒed]
Linos	-	Greek Mythology, Ancient Greek