I already did. I found a guy on Craigslist and he invited me over to his hotel. His specific directions were, "Knock and I'll open the door, you come in, take your clothes off and sit on the couch."
I drove to the hotel, (a classy Marriott), knocked and the door opened. I walked in but didn't see him until I turned around and he was in a towel, fresh out of the shower. He was taller than me and had a nice chest and shoulders. I walked over to the couch, took off my clothes and sat on the couch.
He walked over to me, and removed the towel. His cock was the biggest I'd ever seen, probably 9-10" and only semi-hard. He dangled it in front of my face so I took it in my hands. It was warm and still slightly damp from the shower. He took a step forward, enough for it to be right at my mouth, so I kissed it. It felt like the right thing to do - like I had to worship it. I licked the head and worked my way down the bottom of the shaft until I got to his balls, which were huge, and started licking those. He turned around and backed his ass into my face so I started licking that. I had never even been with a guy until now, and here I was licking a black guy's ass! He told me to, "eat it white boy", so I did. I licked it for a few minutes and then he went and laid down on the bed. I got on all fours and sucked him off for about 10 minutes until he was about to cum. He made me lie on my back with my head hanging over the side of the bed. He sat on my face and made me lick his ass while he jerked off and as he was about to cum, he stepped back and dropped about a cup of hot cum all over my face - my forehead, my eyes, my nose, my lips and even squirted some on my chest. I was jerking off while he did that and I came at the same time, although not nearly as much, and it shot all over my stomach.
I got up to go to the bathroom, naked and covered in cum, and when I went into the bathroom I looked in the mirror and liked what I saw - a whole bunch of cum on my face. I thought about not wiping it off and just walking around like that - I probably would have if he had told me to - but I wiped it off, got my clothes and left. I don't even think he cared.
Since then I've sucked three more and I'm always on the prowl for another one. I haven't bottomed for a black guy yet although I've thought about it..