Pes Jokes

I’m enyaw and I fancy my PE teacher. She is called Kelly Pearce and I go to Beckfoot Oakbank. I always watch her because I am a creep. I live at school under the stairs, but I also try [to] follow her home, and if I'm unsuccessful I look her up on a dodgy website and go on Google maps and look at her door.

Why is it that when I'm in school doing PE, it's fine for someone to say "boys against girls", but the moment I say "blacks against whites" I'm the bad guy?