Wife admits she wants 2 black cocks! What next?

So the other night my wife and myself had just climaxed over an awesome bit of sex. We were feeling adventurous and started asking each other naughty questions.
Such as what celebs do we have a crush on etc
Have we ever cheated on previous partners...
Then I asked her what her biggest fantasy was... well she said to have 2 black guys in her at once! I was a little shocked but we moved on to bed and she went to ....... But this kept me awake so I grabbed her phone and saw she has been watching loads of BBC porn!
It has excited me to maybe see her do this but how do I go about it?