Sooty? He was a TV star Teddy Bear. Here's a picture of him.
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The thing is sometimes words get loaded with hate and contept, and you just have to stop using them in any context where that message is liable to be understood. Nothing wrong with the word "yid", just the word for "Jewe" in theYiddish language - one that and thousands of non-Jewish Spurs fans use it regularly to refer to themselves - but in other settings it's a word to be avoided because it is takes on that load of hate and contempt from the way it's been used too often.

And it's the same for Paki, and that's what makes it different from Aussie or Scotty. Those abbreviations don't have that loading of hate and contempt.