Hacer la o con el culo de un vaso

Hacer la o con el culo de un vaso
 

Cómo se dice este idiom en inglés?

¿Qué quiere decir en español?

pues es hacer algo demasiado simple. Si tu coges el culo un vaso, es muy fácil hacer la o.

Lo único que se me ocurre es

make it easy/easier

No,
I heard something like to do the Rs

Never heard of that...

Maybe a native.

:)

To make the sound of O by rounding one´s lips to resemble the bottom of a Coke bottle, maybe the same meaning as It´s as simple as ABC

There you go.

Easy as pie!

:)

The idiom I Know in Spanish is "no saber hacer la o con un canuto", meaning that somebody knows nothing or can do nothing.

Child's play

Duh!

Another one...

;)

Think nothing of it. It was a piece of cake.

Two I've heard are "easy as falling off a log" and "easy as shooting fish in a barrel"

:)

There are many, but the silence of the OP seems suspicious. ;)

How about.... easy peasy lemon squeezy

we have gone too far, and I tell you why. No saber hacer la o con el culo un vaso o con un canuto, means that sb is so useless that he or she cannot do anything, that she is really clumsy, he writes awfully, she doesn´t know how to draw, even how to do the washing up. I hope this is understood now.