I don't see how it's a racist joke. It's a very specific joke that's only relevant for a very specific person. It would've been the same joke if his name was C

I don't see how it's a racist joke. It's a very specific joke that's only relevant for a very specific person. It would've been the same joke if his name was Connor, race is not relevant at all for this joke. But yes, "all jokes" is probably too broad of a statement.