What Jeeves might say.

You're right: Aristotle didn't write in Latin. I guess I just thought the joke wouldn't be as funny if I'd written that he called the coat  "παλτό σφιχτό διασκέδαση μαλλί." Maybe you're right, though. That is pretty hilarious.

There is a catalogue to be written on the word "celebrate" in modern usage. I have just completed a quick back-and-forth between Palo Alto and Washington, where airport signs, bus placards, and all manner of metropolitan notices advised me either to "celebrate" or to "treat myself" in the following fashions:

1. Cupcakes
2. Me time
3. Business class (viz. vinyl seats and domestic champagne)
4. A blow dry
5. Guacamole

I wonder who are the people, walking down the street, who are thinking to themselves: How should I celebrate myself tonight? Maybe a bit of brain-smoothing Millionaire Matchmaker followed by a cupcake. (Here's a neat trick for consuming those cupcakes while capping the carbs! I learned this on The Today Show. Cut your cupcake in half, longitudinally. That way you'll get a nice mix of frosting and cake. Refrigerate the other half and insert it into your gullet once it has ossified and you need to treat yourself again.)