standing on one's head

standing on one's head

1. (informal, figuratively) Very easily.

   Synonyms: hands down, one-handed, with one's eyes closed

• “standing on one's head” (US) / “standing on one's head” (UK) in Oxford Dictionaries, Oxford University Press.
• “standing on your head” in the Cambridge English Dictionary, Cambridge: Cambridge University Press.
• “do something standing on your head” (US) / “do something standing on your head” (UK) in Macmillan Dictionary
• “somebody can do something standing on their head” in Longman Dictionary of Contemporary English