in layman’s terms

There’s a Russian expression for “layman’s terms” – “To tell by fingers”.

Olga Sedakova “ABOUT FINGERS”

I finished recording a course about Dante at Arzamas’ website. One of them was: what do you need to know to read Dante? It’s a common item.

I asked another thing: what do you need to forget to read Dante?
Other skills to forget include the idea of being told everything by the fingers.
Dante doesn’t use these fingers.
He knows how difficult things are, how unspoken, how irreducible to our habits.

And, speaking of Dante himself, all sorts of fingers should be removed.

I believe this fingers’ expression came from mudras.

mudra (/muˈdrɑː/  Sanskrit: मुद्रा, IASTmudrā, “seal”, “mark”, or “gesture”; Tibetan: ཕྱག་རྒྱ་, THLchakgya,) is a symbolic or ritual gesture or pose in HinduismJainism and Buddhism. While some mudras involve the entire body, most are performed with the hands and fingers.[

You show some mudra and your interlocutor understands you without sounded language. – Simple. Can be something simpler?

Yes! Can be! – It’s the smile.

Just smile. Just always smile – and you will always be understood.

May be an illustration