The dynamic is ingenious. The chan culture has destroyed political correctness on the internet. Here, "fag" = enthusiast (ie. boatfag, planefag), "nigger" almost always refers to the C_A and not actual black people, and by the time you've encountered finkle in two or more successive breads you are ready to run out in the street to tackle-hug a Jew. It's just crazy enough to work.