
I can't help it, I am Scottish. The Scots are the most racist when it comes to jokes. It is to do with our inferiority complex and anybody who is not fair of skin is sufficiently worse off to our way of thinking that they are worthy of a joke.
I grew up in a country where the only foreigners were a few white English and Irish people. People of colour were about as rare as people who like Tony Blair. Call us narrow minded and parochial if you like, but it is true.
So if you don't like it, tough. I blame my parents.
Now say it out loud after me.