Well, I don't know about flat out racism, but I am good friends with a guy at work, who very much flies with the same sex, and if you saw the hell we gave each other...We are usually out drinking together, or trying to convince one another to come out drinking though, so, hmm... He is usually with an umm, male friend when I am in a drinking mood, or I am with a female in a drinking mood, and lets just say nothing is off limits. Now we both take everything with great stride and much humor, it is just part of our friendship, and I feel that the whole racism bit should be left to the same type of friendships. If you have a good friend who is great at math and happens to be Asian, well that would be fair game, as long as he takes in good gesture, and feeds it right back at you, though you should both understand that it is all in a fun and friendly matter.
I would post some of the text messages between me and my friend, but that would probably get me banned, rather it was from what I sent him, or he sent me...lol We still have quite the slush fund of bar tabs either way, and all too many fun times drinking.