Irish translation

[Acid Badger]

I saw a Guiness billboard in Dublin (I made a photo but I acutally fail at uploading it - I'll try later). It says:

Ní féidir an dubh a cur ina bhán air

And I would really like to know what it means.

/e: Now it works:

[linguoboy]

I saw a Guiness billboard in Dublin (I made a photo but I acutally fail at uploading it - I'll try later). It says:

Ní féidir an dubh a cur ina bhán air

And I would really like to know what it means.

First off, there's a slight misspelling: cur is lacking a ponc séimhithe.

Word for word, this is "Ain't possible the black to put in-his white on-him." But it's a proverbial expression meaning "You can't convince him that black is white" or "You can't put one over on him."