Why on earth do you assume I've jumped on anything? I've calmly pointed out that you are a racist, based on the comments you made. Unless of course you're happy for anyone to make racist comments, as long as they claim it's just humour? Maybe your school friend felt the same?
Perhaps the lesson you can learn, is that lazily chucking around comments about racism and xenophobia, doesn't make your view any more valid than the ones you're arguing against. Often they just show the lack of an actual argument, which I expect you'll try to throw back, with no sense of irony.