know (something) like the back of (one's) hand
(redirected from know like the back of our hands)know (something) like the back of (one's) hand
To be extremely familiar with a particular subject, field, or piece of writing, film, music, etc. I've read this book so many times, I know it like the back of my hand. You should ask Samantha for directions—she knows this town like the back of her hand.
know something like the back of your hand
If you know something, especially a place, like the back of your hand, you know it very well. He knows the city like the back of his hand. They were born in the county and knew it like the backs of their hands.