be (as) easy as ABC
To be extremely easy, simple, or intuitive; to require very little skill or effort. After so many years as an accountant, doing taxes is as easy as ABC for me. Don't worry, after some lessons and a bit of practice, driving is as easy as A-B-C! Grandma told me that knitting would be as easy as ABC, but I'm already all tangled up in yarn!
Farlex Dictionary of Idioms. © 2024 Farlex, Inc, all rights reserved.